US2874937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion-resistant sucker rod and method of constructing same
Assignee: Individual
•
Filing: 1955-11-25
•
Granted: 1959-02-24
•
Expires: 1975-11-25
Abstract
No abstract record available.
Inventors
- 👤 Edward F Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:35
CPC Classifications
E; E21; E21B; E21B17/00; Y; Y10; Y10T; Y10T403/00; Y10T403/47; Y10T403/49; Y10T403/4924
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US764943A
Cited
US1246329A
Cited
US2059867A
Cited
US2536388A
Cited
US2453079A
Cited
US2705346A
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 |