US2905099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil well pumping apparatus
Assignee: Phillips Petroleum Co
•
Filing: 1954-10-25
•
Granted: 1959-09-22
•
Expires: 1974-10-25
Abstract
No abstract record available.
Inventors
- 👤 Marshall C Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:30
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; F; F04; F04B; F04B47/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1674815A
Cited
US1720672A
Cited
US2020550A
Cited
US2194154A
Cited
US2281899A
Cited
US2263144A
Cited
US2298834A
Cited
US2242166A
Cited
US2403987A
Cited
US2668500A
Cited
US2642803A
Cited
US2704979A
Cited
US2678605A
Cited
US2689535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |