Patent FR765446A successfully refreshed from Google Patents.
FR765446A
Expired / Lapsed
FR
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Improvements to vacuum devices
Assignee: MATERIEL D INCENDIE DROUVILLE
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Filing: 1933-12-13
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Granted: 1934-06-09
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Expires: 1953-12-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-28 13:56
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/46; F04F5/466
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