US2532418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically operated anchor for tubing or the like
Assignee: Page Oil Tools Inc
•
Filing: 1947-04-21
•
Granted: 1950-12-05
•
Expires: 1967-04-21
Abstract
No abstract record available.
Inventors
- 👤 John S Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:43
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/04; E21B23/0411; E21B23/04115; E21B23/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1074427A
Cited
US1118538A
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US1218549A
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US1582200A
Cited
US1983287A
Cited
US2118497A
Cited
US2328840A
Cited
US2332749A
Cited
US2350973A
Cited
US2435899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |