Category:United States patent 2642679

Media in category "United States patent 2642679"

The following 123 files are in this category, out of 123 total.

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  Patent Case File No. 2,642,679, Ice Rink Resurfacing Machine, Inventor Frank J. Zamboni - NARA - 117724382 (page 10).jpg 2,200 × 1,185; 159 KB
  
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