FR583697A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to telephone circuits
Assignee: Thales SA
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Filing: 1924-07-11
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Granted: 1925-01-19
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Expires: 1944-07-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
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Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 18:50
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/02; H01B11/12
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