US2588748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring well characteristics
Assignee: Stanolind Oil and Gas Co
•
Filing: 1947-01-22
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Granted: 1952-03-11
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Expires: 1967-01-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Niles
- 👤 Norris B Simpson
- 👤 Henry F Sturgis
- 👤 Renic P Vincent
- 👤 Charles W Ziemer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:56
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/10; E21B47/113; G; G01; G01F; G01F1/00; G01F1/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-11 | 1955-09-10 | 1956-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-11 | 1959-09-10 | 1960-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-11 | 1963-09-10 | 1964-03-11 | $7700.00 | Window Closed / Lapsed |