Difference between revisions of "Patent for a Buehnenscheinwerfer, Willy Hagedorn, 1921 (Q31872)"
From CanonBase
(Changed [en] description: a spotlight with a diafragm and mirror.) | (Created claim: Backup document (P74): DE374015C_Original_document_20230730220849.pdf) | ||
| Property / Backup document | |||
| + | |||
| Property / Backup document: DE374015C_Original_document_20230730220849.pdf / rank | |||
| + | Normal rank | ||
Revision as of 20:17, 30 July 2023
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