FR688643A
Expired / Lapsed
FR
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Assignee: Ulysse Bertrand
•
Filing: 1930-01-12
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Granted: 1930-08-27
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Expires: 1950-01-12
Abstract
No abstract record available.
Inventors
- 👤 Ulysse Bertrand
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-26 16:58
CPC Classifications
G; G04; G04B; G04B47/00
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