FR591502A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to protective masks against asphyxiating gases
Assignee: CONSTRUCTION DE MATERIEL DE PR
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Filing: 1925-01-09
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Granted: 1925-07-06
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Expires: 1945-01-09
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
2026-10-23 04:01
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/02; A62B18/08; A62B18/086
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