US3443482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stator-controlled hydraulic motor
Assignee: Pan American Petroleum Corp
•
Filing: 1966-12-19
•
Granted: 1969-05-13
•
Expires: 1986-12-19
Abstract
No abstract record available.
Inventors
- 👤 James L Lummus
- 👤 Arthur Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:17
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/02; F; F04; F04C; F04C15/00; F04C15/0003; F04C15/0007; F04C2/00; F04C2/08; F04C2/10; F04C2/107; F04C2/1071; F04C2/1073
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US459332A
Cited
US2329386A
Cited
US2545604A
Cited
US2532145A
Cited
US2695565A
Cited
US2957427A
Cited
US2874643A
Cited
US3011445A
Cited
US3028812A
Cited
US3309999A
Cited
US3354537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |