US2940495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock nut with frangible driving portion
Assignee: HI SHEAR RIVET TOOL CO
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Filing: 1957-02-28
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Granted: 1960-06-14
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Expires: 1977-02-28
Abstract
No abstract record available.
Inventors
- 👤 George S Wing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:45
CPC Classifications
F; F16; F16B; F16B37/00; F16B31/00; F16B31/02; F16B31/021; F16B33/00; F16B33/06; F16B39/00; F16B39/22; F16B39/28; F16B39/284; F16B39/30; F16B43/00; F16B2200/00; F16B2200/79; F16B35/00; F16B35/04; F16B35/041; F16B35/044; F16B35/045; Y; Y10; Y10S; Y10S411/00; Y10S411/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |