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US3379965A
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Apparatus for investigating earth formations including a flexible pad member having an investigating means and longitudinally extendible hinging means for rotating portions of the pad member
Assignee: Schlumberger Technology Corp
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Filing: 1967-06-28
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Granted: 1968-04-23
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Expires: 1987-06-28
Abstract
No abstract record available.
Inventors
- 👤 Denis R Tanguy
- 👤 Dean F Sauremman
- 👤 John F Key
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:06
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/20
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) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |