FR776630A
Expired / Lapsed
FR
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Improvements to audible warning devices operating by pneumatic depression
Assignee: Jules Gurtner
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Filing: 1933-10-17
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Granted: 1935-01-30
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Expires: 1953-10-17
Abstract
No abstract record available.
Inventors
- 👤 Jules Gurtner
- 👤 Robert Boullay
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-09 22:49
CPC Classifications
G; G10; G10K; G10K9/00; G10K9/02
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References Cited (Backward Citations)
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