US3423671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Borehole apparatus for investigating subsurface earth formations including a plurality of pad members and means for regulating the bearing pressure thereof
Assignee: Services Petroliers Schlumberger SA
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Filing: 1962-08-27
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Granted: 1969-01-21
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Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 Andre Marcel Vezin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:34
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/20; E; E21; E21B; E21B17/00; E21B17/10; E21B17/1014; E21B17/1021; E21B47/00; E21B47/02; E21B47/026; E21B47/08; G01V11/00; G01V11/002; G01V11/005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
IN APPARATUS FOR INVESTIGATING EARTH FORMATIONS TRAVERSED BY A BOREHOLE, THE COMBINATION COMPRISING: AN ELONGATED SUPPORT MEMBER ADAPTED FOR LONGITUDINAL MOVEMENT THROUGH A BOREHOLE; A PLURALITY OF WALL-ENGAGING MEMBERS; AT LEAST ONE ARM MEMBER INDIVIDUALLY COUPLING EACH OF THE DIFFERENT WALL-ENGAGING MEMBERS TO THE SUPPORT MEMBER, SLIDE MEMBERS COUPLED TO SAID SUPPORT MEMBER AND UPON WHICH SAID WALL-ENGAGING MEMBERS ARE SLIDABLY MOUNTED, SAID SLIDE MEMBERS BEING ARRANGED TO MOVE LONGITUDINALLY WITH RESPECT TO SAID SUPPORT MEMBER, AND MEANS FOR PREVENTING LONGITUDINAL MOVEMENT OF THE WALLENGAGING MEMBERS WITH RESPECT TO THE SUPPORT MEMBER.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |