US2695067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Open hole hook wall packer
Assignee: Johnston Testers Inc
•
Filing: 1952-06-06
•
Granted: 1954-11-23
•
Expires: 1972-06-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph D Smith
- 👤 William B Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:32
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1291
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US367052A
Cited
US406162A
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US925906A
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US1124602A
Cited
US1436274A
Cited
US1803841A
Cited
US1860467A
Cited
US2160515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |