US2696111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill string weight indicating apparatus
Assignee: Warren Automatic Tool Co
•
Filing: 1951-02-02
•
Granted: 1954-12-07
•
Expires: 1971-02-02
Abstract
No abstract record available.
Inventors
- 👤 Ray E Conner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:53
CPC Classifications
G; G01; G01G; G01G19/00; G01G19/14; G01G19/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1992343A
Cited
US2013810A
Cited
US2248322A
Cited
US2349329A
Cited
US2459542A
Cited
US2494781A
Cited
US2528883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |