File:Triple Contact Plug 1907.png
Size of this preview: 478 × 600 pixels. Other resolutions: 191 × 240 pixels | 573 × 719 pixels.
Original file (573 × 719 pixels, file size: 296 KB, MIME type: image/png)
Summary
| Description | English: Triple Contact Plug 1907. |
| Source | Partial page from 1907 book International Library of Technology: ...Principles of Telephony... International Textbook Company, Scranton, PA; copyright expired. |
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Licensing
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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1930, and if not then due to lack of notice or renewal. See this page for further explanation. |
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Original upload log
Transferred from en.wikipedia to Commons using For the Common Good.
The original description page was here. All following user names refer to en.wikipedia.
| Date/Time | Dimensions | User | Comment |
|---|---|---|---|
| 22:55, 19 June 2007 | 573 × 719 (303,038 bytes) | w:en:Dicklyon (talk | contribs) | Partial page from 1907 book ''International Library of Technology: ...Principles of Telephony...'' International Textbook Company, Scranton, PA; copyright expired. |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:45, 2 October 2018 | | 573 × 719 (296 KB) | Arlene the bean | Transferred from en.wikipedia: see original upload log above |
File usage
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