US2962099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blowout control valve
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1956-01-20
•
Granted: 1960-11-29
•
Expires: 1976-01-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Earnest H Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:24
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/08; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7785; Y10T137/7787; Y10T137/7789
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US930158A
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US1459460A
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US2325264A
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US2552479A
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US2512190A
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US2698054A
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US2642140A
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US2579334A
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US2751022A
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US2724443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |