File:Telegraph Key Catlin Grip.png
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DescriptionTelegraph Key Catlin Grip.png |
English: The "Catlin" grip for using a telegraph key. |
Date | |
Source | American boy's book of electricity, Published 1916, pg. 223. Fig. 192 |
Author | Seaver, Charles Homer |
Public domainPublic domainfalsefalse |
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Telegraph_Key_Catlin_Grip.png |
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current | 12:48, 7 April 2017 | 1,574 × 511 (163 KB) | Oksmith (talk | contribs) | User created page with UploadWizard |
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