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US2884002A
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Drill pipe valve
Assignee: FIRST ASSET-BASED LENDING GROUP Inc C/O CONSOLIDATED ASSET MANAGEMENT COMPANY 120 NORTH ROBINSON OKLAHOMA CITY OK 73192
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Filing: 1957-10-14
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Granted: 1959-04-28
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Expires: 1977-10-14
Abstract
No abstract record available.
Inventors
- 👤 James O Melton
- 👤 Irvin M Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:14
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/10; Y; Y10; Y10T; Y10T137/00; Y10T137/7504; Y10T137/7722; Y10T137/7723; Y10T137/773
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2751021A
Cited
US2768695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |