US3063759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill collar stabilizer
Assignee: DRILCO OIL TOOLS Inc
•
Filing: 1958-07-11
•
Granted: 1962-11-13
•
Expires: 1978-07-11
Abstract
No abstract record available.
Inventors
- 👤 Stanley C Moore
- 👤 Henry M Rollins
- 👤 William S Bachman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:05
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/1042
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2072320A
Cited
US2162426A
Cited
US2212153A
Cited
US2288124A
Cited
US2696367A
Cited
US2594550A
Cited
US2657907A
Cited
US2715552A
Cited
US2876992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |