FR537186A
Expired / Lapsed
FR
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Slide rule for gears
Assignee: Marcel Crusellar
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Filing: 1921-06-20
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Granted: 1922-05-17
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Expires: 1941-06-20
Abstract
No abstract record available.
Inventors
- 👤 Marcel Crusellar
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-08 02:31
CPC Classifications
G; G06; G06G; G06G1/00; G06G1/02; G06G1/10; G06G1/12
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