US3497958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Systems and methods for determining the position of a tool in a borehole
Assignee: Schlumberger Technology Corp
•
Filing: 1966-05-02
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Granted: 1970-03-03
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Expires: 1986-05-02
Abstract
No abstract record available.
Inventors
- 👤 Lee H Gollwitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:18
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/04; G; G01; G01B; G01B21/00; G01B21/02; G01B21/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3027649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |