US2934147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for severing subsurface well devices
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1956-04-20
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Granted: 1960-04-26
•
Expires: 1976-04-20
Abstract
No abstract record available.
Inventors
- 👤 Reuben C Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:47
CPC Classifications
E; E21; E21B; E21B31/00; E21B31/12; E21B31/16; E21B29/00; E21B29/02; E21B31/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US598805A
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US2116465A
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US2243099A
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US2481637A
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US2640547A
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US2671510A
Cited
US2751019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |