Patent FR501875A successfully refreshed from Google Patents.
FR501875A
Expired / Lapsed
FR
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Spring washer improved to prevent loosening of bolts, nuts, screws, studs, etc., when applied to or in machinery subjected to vibration
Assignee: Individual
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Filing: 1919-07-08
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Granted: 1920-04-28
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Expires: 1939-07-08
Abstract
No abstract record available.
Inventors
- 👤 Frank Humphris
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-31 08:50
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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