US2508237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Back-off nut
Assignee: George Gorton Machine Co
•
Filing: 1948-09-29
•
Granted: 1950-05-16
•
Expires: 1968-09-29
Abstract
No abstract record available.
Inventors
- 👤 Theodore F Eserkaln
- 👤 Clifford L Qualler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:16
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/24; B23B31/26; B23B31/261; B23B31/266; F; F16; F16B; F16B2200/00; F16B2200/69; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/943; Y10T; Y10T82/00; Y10T82/25; Y10T82/2552; Y10T82/2572
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US892479A
Cited
US1212330A
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US1337313A
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US1794361A
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US1933575A
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US1971299A
Cited
US2026448A
Cited
US2078859A
Cited
US2153424A
Cited
US2387412A
Cited
US2404561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |