US3012619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling rig
Assignee: Individual
•
Filing: 1959-01-06
•
Granted: 1961-12-12
•
Expires: 1979-01-06
Abstract
No abstract record available.
Inventors
- 👤 Carl C Farque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:44
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/084; E21B7/00; E21B7/02; E21B7/027; E21B7/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US417352A
Cited
US2334312A
Cited
US2509410A
Cited
US2643858A
Cited
US2622847A
Cited
US2673712A
Cited
US2754085A
Cited
US2792198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |