Patent US3028809A successfully refreshed from Google Patents.
Patent FR64946E successfully refreshed from Google Patents.
FR64946E
Expired / Lapsed
FR
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Notched cylindrical-head screw, and key to operate this screw
Assignee: Crinello Tullio Gino Crinelli
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Filing: 1953-12-24
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Granted: 1955-12-14
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Expires: 1973-12-24
Abstract
No abstract record available.
Inventors
- 👤 Crinello Tullio Gino Crinelli
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-25 13:50
CPC Classifications
F; F16; F16B; F16B23/00; F16B23/0007; B; B25; B25B; B25B13/00; B25B13/02; B25B13/06; B25B13/065
Claims Analysis
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References Cited (Backward Citations)
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