Patent DE574020C successfully refreshed from Google Patents.
DE574020C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Electron tubes
Assignee: Siemens Schuckertwerke AG
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Filing: —
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Granted: 1933-04-08
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Expires: 1950-04-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-05 19:27
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/28; H01J19/38; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0015
Claims Analysis
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References Cited (Backward Citations)
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