Patent US6398799B2 successfully refreshed from Google Patents.
FR795527A
Expired / Lapsed
FR
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Soft membrane valve for respiratory masks
Assignee: A GOUET ETS
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Filing: 1934-12-20
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Granted: 1936-03-16
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Expires: 1954-12-20
Abstract
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Inventors
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Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-23 07:42
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02
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