FR634878A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
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Assignee: Georges-Eugene-Alfre Hess
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Filing: 1927-05-23
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Granted: 1928-03-01
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Expires: 1947-05-23
Abstract
No abstract record available.
Inventors
- 👤 Georges-Eugene-Alfre Hess
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-29 21:19
CPC Classifications
H; H04; H04R; H04R7/00; H04R7/02; H04R7/04; H04R7/06; H04R7/10
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References Cited (Backward Citations)
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