FR667357A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to rectilinear motion electric motors for loudspeakers and similar applications
Assignee: Joseph Bethenod
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Filing: 1928-04-16
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Granted: 1929-10-16
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Expires: 1948-04-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph Bethenod
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-23 04:25
CPC Classifications
H; H04; H04R; H04R9/00; H04R9/02; H04R9/04
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