Patent US2487129A successfully refreshed from Google Patents.
US2487129A
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Self-locking device
Assignee: Elastic Stop Nut Corp
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Filing: 1944-04-05
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Granted: 1949-11-08
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Expires: 1964-04-05
Abstract
No abstract record available.
Inventors
- 👤 Hallock Robert Lay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:41
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/34; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/947; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49917; Y10T29/49918; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12264; Y10T428/31504; Y10T428/31678; Y10T428/31707
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1550282A
Cited
US1729013A
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US2102489A
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US2255948A
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US2336791A
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US2326681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |