US2874938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End fittings for sucker rods having a flowable binder
Assignee: Individual
•
Filing: 1956-01-09
•
Granted: 1959-02-24
•
Expires: 1976-01-09
Abstract
No abstract record available.
Inventors
- 👤 Edward F Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:28
CPC Classifications
E; E21; E21B; E21B17/00; Y; Y10; Y10S; Y10S74/00; Y10S74/10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1064; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49917; Y10T29/49918; Y10T29/49925; Y10T29/49927; Y10T403/00; Y10T403/47; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18088; Y10T74/18128; Y10T74/18136
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2732423A
Cited
US764943A
Cited
US1169642A
Cited
US2059867A
Cited
US2372048A
Cited
US2584696A
Cited
US2564695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |