Patent US2797756A successfully refreshed from Google Patents.
US2797756A
Expired / Lapsed
US
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Well tool mounting
Assignee: Individual
•
Filing: 1951-11-14
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Granted: 1957-07-02
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Expires: 1971-11-14
Abstract
No abstract record available.
Inventors
- 👤 Sr Jesse E Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:27
CPC Classifications
E; E21; E21B; E21B37/00; E21B37/02; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17128; Y10T279/17171; Y10T279/17179
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1379165A
Cited
US1418329A
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US1829760A
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US2184376A
Cited
US2467833A
Cited
US2628682A
Cited
US2569457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |