FR831668A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Advanced gas mask
Assignee: Emile Frederic Bourcey
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Filing: 1937-04-16
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Granted: 1938-09-12
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Expires: 1957-04-16
Abstract
No abstract record available.
Inventors
- 👤 Emile Frederic Bourcey
- 👤 Rene Isidore Bourcey
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-04 03:45
CPC Classifications
A; A62; A62B; A62B9/00; A62B9/04
Claims Analysis
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References Cited (Backward Citations)
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