US3051240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple testing and pressuring apparatus
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1959-04-13
•
Granted: 1962-08-28
•
Expires: 1979-04-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Hiram H Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:40
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1294
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2337752A
Cited
US2657895A
Cited
US2690226A
Cited
US2665758A
Cited
US2802534A
Cited
US2846014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |