FR849941A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Semi-automatic shifting with expandable sectors for bicycles
Assignee: Cesare Ravetto
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Filing: 1939-02-06
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Granted: 1939-12-05
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Expires: 1959-02-06
Abstract
No abstract record available.
Inventors
- 👤 Cesare Ravetto
- 👤 Francesco Ravetto
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-07 15:17
CPC Classifications
B; B62; B62M; B62M9/00; B62M9/04; B62M9/06; B62M9/08
Claims Analysis
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References Cited (Backward Citations)
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