US3374838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid expansible packer and anchor apparatus
Assignee: Schlumberger Well Surveying Corp
•
Filing: 1965-11-08
•
Granted: 1968-03-26
•
Expires: 1985-11-08
Abstract
No abstract record available.
Inventors
- 👤 James H Current
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:10
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2196653A
Cited
US2315931A
Cited
US2618344A
Cited
US2681114A
Cited
US2764243A
Cited
US2799343A
Cited
US2943684A
Cited
US2966946A
Cited
US2987129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |