US3419079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well tool with expansible anchor
Assignee: Schlumberger Technology Corp
•
Filing: 1967-09-27
•
Granted: 1968-12-31
•
Expires: 1987-09-27
Abstract
No abstract record available.
Inventors
- 👤 James H Current
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:44
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1293; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2737248A
Cited
US2751238A
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US2893492A
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US3000443A
Cited
US3236309A
Cited
US3105556A
Cited
US3244233A
Cited
US3311171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |