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FR972292A
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Infra-sound detectors and alarms and their application to the detection of openings of doors and windows
Assignee: Ernest Esclangon
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Filing: 1941-01-18
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Granted: 1951-01-29
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Expires: 1961-01-18
Abstract
No abstract record available.
Inventors
- 👤 Ernest Esclangon
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-30 18:00
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/16; G08B13/1654; G08B13/1681; G08B19/00; G08B19/005
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