FR692503A
Expired / Lapsed
FR
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Improvements made to propellers, especially those with variable pitch
Assignee: Ferdinand-Emile Lallemand
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Filing: 1930-03-21
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Granted: 1930-11-06
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Expires: 1950-03-21
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand-Emile Lallemand
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-27 18:26
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/32; B64C11/34; B64C11/343
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