FR501450A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Serrated annular constructions
Assignee: FREDERIC EMILE KOPP
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Filing: 1919-07-05
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Granted: 1920-04-14
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Expires: 1939-07-05
Abstract
No abstract record available.
Inventors
- 👤 Frederic-Emile Kopp
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-31 22:00
CPC Classifications
E; E04; E04H; E04H1/00; E04H1/02; E04H1/04
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References Cited (Backward Citations)
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