FR578360A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
headset for radiotelephony
Assignee: Jean-Albert Hardy
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Filing: 1923-05-18
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Granted: 1924-09-24
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Expires: 1943-05-18
Abstract
No abstract record available.
Inventors
- 👤 Jean-Albert Hardy
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-28 14:39
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/10; H04R1/1008; H04R1/1058; H04R1/1075; H04R1/20; H04R1/32; H04R1/34; H04R1/345
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References Cited (Backward Citations)
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