Difference between revisions of "Patent for a Buehnenscheinwerfer, Willy Hagedorn, 1921 (Q31872)"
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(Created a new Item: Patent for a Buehnenscheinwerfer, Willy Hagedorn, 1921, a spotlight with a diafragm.) | (Created claim: Type of information (P11): source (Q98)) | ||
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Revision as of 20:12, 30 July 2023
a spotlight with a diafragm.
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Patent for a Buehnenscheinwerfer, Willy Hagedorn, 1921 | a spotlight with a diafragm. |