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FR850918A Expired / Lapsed FR ⏱️ 0.0 years remaining

Improvements to air navigation devices

Assignee: Lemoigne
•
Filing: 1938-09-05
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Granted: 1939-12-29
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Expires: 1958-09-05
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Abstract

No abstract record available.

Inventors

  • 👤 Lemoigne

Bibliographic Details

Application Number —
Jurisdiction FR
Data Source google_patents
Last Synchronized 2026-11-02 17:40
CPC Classifications
B; B64; B64C; B64C23/00; B64C21/00; B64C21/02; B64C21/025; B64C21/04; B64C21/08; B64C23/06; B64C2230/00; B64C2230/04; B64C2230/06; B64C2230/16; B64C2230/20; B64C2230/22; B64C2230/28; Y; Y02; Y02T; Y02T50/00; Y02T50/10; Y02T50/60

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