Category:Carbon hearing aids

Media in category "Carbon hearing aids"

The following 30 files are in this category, out of 30 total.

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  Ardent hearing aid.JPG 3,264 × 2,448; 636 KB
  
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  Bell telephone magazine (1922) (14569625968).jpg 1,742 × 2,624; 794 KB
  
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  Bell telephone magazine (1922) (14569819567).jpg 1,702 × 2,612; 790 KB
  
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  Carrying Case For The Vintage Acousticon Silver Anniversary Model 28 Carbon Hearing Aid, Circa 1927 - 1932 (16396601678).jpg 2,775 × 2,620; 3.08 MB
  
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  Instruction Booklet For The Vintage Acousticon Silver Anniversary Model 28 Carbon Hearing Aid, Circa 1927 - 1932 (16583115252).jpg 2,071 × 1,083; 403 KB
  
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  Instruction Booklet For Vintage Acousticon Carbon Hearing Aid - "The Acousticon", Type P.I., Sold By The Hutchinson Acoustic Company, Circa 1904 - 1905 (14258643919).jpg 750 × 1,376; 350 KB
  
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  Vintage Acousticon Carbon Hearing Aid - "The Acousticon", Type P.I., Sold By The Hutchinson Acoustic Company, Circa 1904 - 1905 (14409911991).jpg 2,400 × 2,984; 2.38 MB
  
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  Vintage Acousticon Carbon Hearing Aid - "The Acousticon", Type P.I., Sold By The Hutchinson Acoustic Company, Circa 1904 - 1905 (14413304205).jpg 1,922 × 2,179; 1.34 MB
  
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  Vintage Acousticon Carbon Hearing Aid by Dictograph Products Corporation (successor to General Acoustic Co.), Model SRA (8410334785).jpg 1,029 × 1,127; 562 KB
  
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  Vintage Acousticon Golden Tone Model 38 Carbon Hearing Aid, Made In USA, Instruction Booklet Copyright 1931 (39109745650).jpg 1,460 × 1,467; 1.36 MB
  
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  Vintage Acousticon Golden Tone Model 38 Carbon Hearing Aid, Made In USA, Instruction Booklet Copyright 1931 (40923252681).jpg 4,143 × 2,768; 2.6 MB
  
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  Vintage Acousticon Golden Tone Model 38 Carbon Hearing Aid, Made In USA, Measures 4.75 Inches Wide By 5.5 Inches Tall, Instruction Booklet Copyright 1931 (39109770530).jpg 2,297 × 2,298; 1.78 MB
  
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  Vintage Acousticon Model SRB Carbon Hearing Aid By General Acoustic Company, Made In USA From 1910 - 1928 (21175388443).jpg 2,380 × 2,462; 2.19 MB
  
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  Vintage Acousticon Model SRD Dual Microphone Carbon Hearing Aid, Manufactured Between 1910 And 1928 By The General Acoustic Company (14355372717).jpg 2,673 × 1,714; 2.2 MB
  
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  Vintage Acousticon Model SRD Dual Microphone Carbon Hearing Aid, Manufactured Between 1910 And 1928 By The General Acoustic Company (14538431261).jpg 2,423 × 2,898; 2.26 MB
  
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  Vintage Acousticon Model SRD Dual Microphone Carbon Hearing Aid, Manufactured Between 1910 And 1928 By The General Acoustic Company (14541820715).jpg 2,910 × 2,140; 2.42 MB
  
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  Vintage Acousticon Silver Anniversary Model 28 Carbon Hearing Aid, Circa 1927 - 1932 (15964041803).jpg 3,714 × 3,192; 3.4 MB
  
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  Vintage Ardente Carbon Hearing Aid, Model C5 II, Made in England, Mr. R.H. Dent, Circa 1930 (11091913376).jpg 3,510 × 3,224; 2.51 MB
  
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  Vintage Ardente Carbon Hearing Aid, Model C5 II, Made in England, Mr. R.H. Dent, Circa 1930 (11091951314).jpg 3,603 × 3,422; 3.96 MB
  
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  Vintage DeForest Audiphone Carbon Hearing Aid Microphone, Battery Connetion and Tom Thumb Earpieces (14224592755).jpg 3,426 × 3,060; 3.49 MB
  
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  Vintage DeForest Audiphone Carbon Hearing Aid, Circa 1933 (14222266802).jpg 2,184 × 2,156; 2.29 MB
  
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  Vintage Gem Model 30 Standard Carbon Hearing Aid, Made In USA, Circa 1935, Pictured Are the Carrying Case, Battery With Extension Cord, Microphone And Earphone (27803557434).jpg 2,059 × 2,285; 1.91 MB
  
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  Vintage Gem Model 30 Standard Carbon Hearing Aid, Made In USA, Circa 1935, Pictured Are the Carrying Case, Battery With Extension Cord, Microphone And Earphone (Without Metal Headband) (38490486971).jpg 1,805 × 1,874; 1.89 MB
  
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  Vintage Gem Model 32 Carbon Hearing Aid, Made In USA, Circa 1935 (40885151322).jpg 2,916 × 2,087; 1.31 MB
  
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  Vintage Magic Earphone Carbon Hearing Aid By E.B. Meyrowitz, Made In USA (21792634995).jpg 3,390 × 2,756; 2.58 MB
  
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  Vintage Sonotone Carbon Hearing Aid, Model Number Unknown, Shown Without A Battery, Made In USA, Circa 1930s (40991292082).jpg 3,055 × 3,058; 4.16 MB
  
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  Vintage Sonotone Model 400 Carbon Hearing Aid With Bone Conduction Transducer, Circa 1932 (13315925914).jpg 2,257 × 1,725; 1.24 MB
  
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  Vintage Sonotone Model 400 Carbon Hearing Aid, Double Microphone In Tortoise Shell Case, Circa 1932 (13315527575).jpg 3,239 × 2,315; 2.03 MB
  
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  Vintage Sonotone Model 451 Carbon Hearing Aid, Circa 1937 (16771506236).jpg 3,201 × 2,393; 2.5 MB
  
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  Vintage Sonotone Model 451 Carbon Hearing Aid, Circa 1937 (16796258611).jpg 2,781 × 3,246; 3.18 MB