US3026941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subsurface well bore tool
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1957-12-23
•
Granted: 1962-03-27
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Expires: 1977-12-23
Abstract
No abstract record available.
Inventors
- 👤 John F Muse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:35
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/01; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1291; E21B33/1292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2400970A
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US2429910A
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US2389869A
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US2449920A
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US2671513A
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US2924434A
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US2802534A
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US2871949A
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US2878878A
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US2893491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |