Patent US4270356A successfully refreshed from Google Patents.
Patent FR721275A successfully refreshed from Google Patents.
FR721275A
Expired / Lapsed
FR
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Frequency relays operating according to the ferrari principle
Assignee: Landis and Gyr AG
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Filing: 1931-08-12
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Granted: 1932-03-01
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Expires: 1951-08-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-29 15:25
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/30; H01H51/32
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