Difference between revisions of "Patent for a Buehnenscheinwerfer, Willy Hagedorn, 1921 (Q31872)"

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a spotlight with a diafragm and mirror.

(‎Changed [en] description: a spotlight with a diafragm and mirror.)
(‎Created claim: mentions (P78): iris (Q3124))
 
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Property / Backup document: DE374015C_Original_document_20230730220849.pdf / rank
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Latest revision as of 20:19, 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.

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