Patent US1219038A successfully refreshed from Google Patents.
DE873293C
Expired / Lapsed
DE
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Electrical control for electron tubes with control electrode
Assignee: Otis Elevator Co
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Filing: 1950-10-03
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Granted: 1953-04-13
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Expires: 1970-10-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-07 08:36
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04
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