Difference between revisions of "Patent for a device for projecting backgrounds. Geyling, Planner, 1932 (Q38410)"
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(Created claim: Copy available online (P37): https://worldwide.espacenet.com/patent/search/family/003689214/publication/US1881355A?q=pn%3DUS1881355A) | (Added [en] alias: AT107235B) | ||
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Revision as of 14:11, 13 February 2025
No description defined
- AT107235B
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Patent for a device for projecting backgrounds. Geyling, Planner, 1932 | No description defined |
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