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US2935871A
Expired / Lapsed
US
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Well logging apparatus
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: 1956-04-10
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Granted: 1960-05-10
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Expires: 1976-04-10
Abstract
No abstract record available.
Inventors
- 👤 Robert G Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:45
CPC Classifications
E; E21; E21B; E21B45/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733599A
Cited
US2357051A
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US2390178A
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US2565951A
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US2628498A
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US2679161A
Cited
US2600336A
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US2729100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |