Patent US2742939A successfully refreshed from Google Patents.
US2742939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal lock nut with yielding flange
Assignee: Individual
•
Filing: 1951-08-07
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Granted: 1956-04-24
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Expires: 1971-08-07
Abstract
No abstract record available.
Inventors
- 👤 Charles O Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:46
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/16; F16B39/00; F16B39/22; F16B39/28; F16B39/284; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/937
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1063146A
Cited
US1330594A
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GB308851A
Cited
US2005348A
Cited
US1981363A
Cited
DE599533C
Cited
US2154174A
Cited
US2287691A
Cited
US2383141A
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US2397238A
Cited
US2399090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |