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: Publication date (P40): 16 November 1921)
(‎Created claim: mentions (P78): iris (Q3124))
 
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description / endescription / en
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a spotlight with a diafragm.
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a spotlight with a diafragm and mirror.
Property / Copy available online
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Property / Copy available online: https://worldwide.espacenet.com/patent/search/family/007165068/publication/DE374015C?q=pn%3DDE374015C / rank
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Normal rank
Property / Backup document
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Property / Backup document: DE374015C_Original_document_20230730220849.pdf / rank
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Property / Internal image
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Property / Internal image: DE_374015_C.png / rank
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Normal rank
Property / mentions
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Property / mentions: iris / rank
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Normal rank

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.

    Statements

     

    Wikidata