FR539175A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Economical method of constructing collectors for electric dynamo machines
Assignee: Francois Mareschal
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Filing: 1921-08-09
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Granted: 1922-06-22
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Expires: 1941-08-09
Abstract
No abstract record available.
Inventors
- 👤 Francois Mareschal
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-23 03:25
CPC Classifications
H; H02; H02K; H02K13/00; H02K13/006
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