DE456570C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Electrodynamic telephone
Assignee: Siemens and Halske AG
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Filing: 1926-04-02
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Granted: 1928-02-21
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Expires: 1946-04-02
Abstract
No abstract record available.
Inventors
- 👤 Dr Hans Gerdien
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-02 18:11
CPC Classifications
H; H04; H04R; H04R7/00; H04R7/02; H04R7/12; H04R7/14; H04R9/00; H04R9/02; H04R9/04; H04R9/046; H04R9/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
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