US2806534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic pulling tool for use in wells
Assignee: Individual
•
Filing: 1952-04-30
•
Granted: 1957-09-17
•
Expires: 1972-04-30
Abstract
No abstract record available.
Inventors
- 👤 Ernest L Potts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:25
CPC Classifications
E; E21; E21B; E21B31/00; E21B31/12; E21B31/20; E21B23/00; E21B23/04; E21B23/0411; E21B23/04115
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1441097A
Cited
US1852250A
Cited
US1801673A
Cited
US1803732A
Cited
GB493471A
Cited
US2295961A
Cited
US2393962A
Cited
US2462994A
Cited
US2537413A
Cited
US2507127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |