FR853389A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to protective devices against stale atmospheres, especially those loaded with noxious vapors or suspended dust
Assignee: KREMLIN ATEL DU
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Filing: 1938-11-03
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Granted: 1940-03-18
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Expires: 1958-11-03
Abstract
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Inventors
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Bibliographic Details
Application Number
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Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-27 22:49
CPC Classifications
A; A62; A62B; A62B17/00; A62B17/04
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