Difference between revisions of "Patent for a Buehnenscheinwerfer, Willy Hagedorn, 1921 (Q31872)"
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a spotlight with a diafragm and mirror.
(Created claim: author (P41): Willy Hagedorn (Q2613)) | (Removed claim: Canon source Id (P369): 1017, #quickstatements; #temporary_batch_1743590302320) | ||||||||||||||
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| + | 16 November 1921Gregorian
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Latest revision as of 10:42, 2 April 2025
a spotlight with a diafragm and mirror.
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Patent for a Buehnenscheinwerfer, Willy Hagedorn, 1921 | a spotlight with a diafragm and mirror. |
Statements
16 November 1921Gregorian
0 references