Difference between revisions of "Patent for Perfectionnements apportés aux dispositifs servant à l'éclairage, Geyling, Planer, 1930 (Q38423)"

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Patent for Improvements to lighting devices

(‎Created claim: Publication date (P40): 24 January 1930)
(‎Created claim: Copy available online (P37): https://worldwide.espacenet.com/patent/search?q=pn%3DFR674233A)
Property / Copy available online
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Revision as of 21:16, 13 February 2025

Patent for Improvements to lighting devices
  • FR674233A
Language Label Description Also known as
English
Patent for Perfectionnements apportés aux dispositifs servant à l'éclairage, Geyling, Planer, 1930
Patent for Improvements to lighting devices
  • FR674233A

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