Patent for a Buehnenscheinwerfer, Willy Hagedorn, 1921 (Q31872)
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Revision as of 20:14, 30 July 2023 by ChrisVG (talk | contribs) (Created claim: Property:P37: https://worldwide.espacenet.com/patent/search/family/007165068/publication/DE374015C?q=pn%3DDE374015C)
a spotlight with a diafragm.
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Patent for a Buehnenscheinwerfer, Willy Hagedorn, 1921 | a spotlight with a diafragm. |
Statements
16 November 1921Gregorian
0 references