US2179593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical method and apparatus for determining the characteristics of a geological formation traversed by a bore-hole
Assignee: Schlumberger Well Surveying Corp
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Filing: 1936-09-28
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Granted: 1939-11-14
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Expires: 1956-09-28
Abstract
No abstract record available.
Inventors
- 👤 Jakosky John Jay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:28
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/20; G01V3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-11-13 | 1943-05-15 | 1943-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-11-13 | 1947-05-15 | 1947-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-11-13 | 1951-05-15 | 1951-11-14 | $7700.00 | Window Closed / Lapsed |