Revision history of "Patent for a Buehnenscheinwerfer, Willy Hagedorn, 1921" (Q31872)

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curprev 20:19, 30 July 2023‎ ChrisVG talk contribs‎ 4,076 bytes +421‎ ‎Created claim: mentions (P78): iris (Q3124)
curprev 20:18, 30 July 2023‎ ChrisVG talk contribs‎ 3,655 bytes +350‎ ‎Created claim: Internal image (P24): DE_374015_C.png
curprev 20:17, 30 July 2023‎ ChrisVG talk contribs‎ 3,305 bytes +381‎ ‎Created claim: Backup document (P74): DE374015C_Original_document_20230730220849.pdf
curprev 20:16, 30 July 2023‎ ChrisVG talk contribs‎ 2,924 bytes +11‎ ‎Changed [en] description: a spotlight with a diafragm and mirror.
curprev 20:14, 30 July 2023‎ ChrisVG talk contribs‎ 2,913 bytes +437‎ ‎Created claim: Copy available online (P37): https://worldwide.espacenet.com/patent/search/family/007165068/publication/DE374015C?q=pn%3DDE374015C
curprev 20:13, 30 July 2023‎ ChrisVG talk contribs‎ 2,476 bytes +512‎ ‎Created claim: Publication date (P40): 16 November 1921
curprev 20:13, 30 July 2023‎ ChrisVG talk contribs‎ 1,964 bytes +421‎ ‎Created claim: author (P41): Willy Hagedorn (Q2613)
curprev 20:13, 30 July 2023‎ ChrisVG talk contribs‎ 1,543 bytes +415‎ ‎Created claim: Field (P19): lighting and projection (Q7)
curprev 20:12, 30 July 2023‎ ChrisVG talk contribs‎ 1,128 bytes +772‎ ‎Created claim: Type of information (P11): source (Q98)
curprev 20:12, 30 July 2023‎ ChrisVG talk contribs‎ 356 bytes +356‎ ‎Created a new Item: Patent for a Buehnenscheinwerfer, Willy Hagedorn, 1921, a spotlight with a diafragm.

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