US2671640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well jarring apparatus
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1948-07-19
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Granted: 1954-03-09
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Expires: 1968-07-19
Abstract
No abstract record available.
Inventors
- 👤 Reuben C Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:51
CPC Classifications
E; E21; E21B; E21B31/00; E21B31/107; E21B23/00; E21B23/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2008743A
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US1849879A
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US2008765A
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US2126241A
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US2122751A
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US2144869A
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US2309872A
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US2373006A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |