Patent DE645829C successfully refreshed from Google Patents.
DE645829C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Incandescent cathode tubes in which the cathode is heated through the vessel wall with the help of an external heat source
Assignee: Telefunken AG
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Filing: 1935-09-11
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Granted: 1937-06-04
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Expires: 1955-09-11
Abstract
No abstract record available.
Inventors
- 👤 Dr Felix Breyer
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-03 14:25
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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