FR830049A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Secondary emission cathode for cathode ray tube
Assignee: Robert Bosch Fernsehanlagen GmbH
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Filing: 1937-11-27
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Granted: 1938-07-19
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Expires: 1957-11-27
Abstract
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Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-31 16:01
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/48; H01J29/482
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