File:Gong and Signal Chair patent.gif
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Summary
| Description |
English: The patent for the Gong and Signal Chair invented by Miriam Benjamin. |
| Date | |
| Source | http://inventors.about.com/library/inventors/blbenjamin.htm [1] |
| Author | Benjamin, Kaiser, Wood |
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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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:12, 2 June 2021 | | 2,320 × 3,408 (105 KB) | wikimediacommons>Wickedthought | Higher res version from the Patent Office |
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