US3456723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically set well packer
Assignee: Camco Inc
•
Filing: 1967-06-30
•
Granted: 1969-07-22
•
Expires: 1987-06-30
Abstract
No abstract record available.
Inventors
- 👤 James H Current
- 👤 Harry C Ehlert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:20
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295; E21B33/1291; E21B33/1292
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2715441A
Cited
US2982358A
Cited
US3142339A
Cited
US3236309A
Cited
US3142338A
Cited
US3211227A
Cited
US3215207A
Cited
US3244233A
Cited
US3344861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |