File:Farnsworth Image Dissector tube 1931.jpg
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Summary
| Description |
English: One of the earliest experimental video camera tubes, American engineer Philo T. Farnsworth's "image dissector" tube invented in 1930. |
| Date | October 1934 |
| Source | Retrieved 11 May 2024 from Electronics magazine, McGraw-Hill Co., New York, Vol.7, No.10, October 1934, p.302 without attribution. This publication's copyright would have been renewed in 1962. The Online Books record of copyright renewals for Electronics lists no renewals. Therefore it was not renewed and is in the public domain |
| Author | Unknown author |
Licensing
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This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.
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File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:10, 15 May 2024 | | 544 × 285 (51 KB) | Chetvorno | Uploaded a work by {{Unknown|author}} from Retrieved 11 May 2024 from [https://www.worldradiohistory.com/Archive-Electronics/30s/Electronics-1934-10.pdf Electronics magazine, McGraw-Hill Co., New York, Vol.7, No.10, October 1934, p.302] without attribution. This publication's copyright would have been renewed in 1962. The [https://onlinebooks.library.upenn.edu/webbin/cinfo/electronics Online Books record of copyright renewals for Electronics] lists no renewals. Therefore it was not renew... |
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