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: Canon documents public id (P71): 1017, #quickstatements; #temporary_batch_1743590155432)
(‎Removed claim: Canon source Id (P369): 1017, #quickstatements; #temporary_batch_1743590302320)
 
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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

    Type of information
    Field
    Internal image
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    author
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    Publication date
    16 November 1921Gregorian
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    mentions
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    Canon documents public id
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