US3496360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cryogenically cooled radioactivity borehole logging technique
Assignee: Schlumberger Technology Corp
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Filing: 1967-06-22
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Granted: 1970-02-17
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Expires: 1987-06-22
Abstract
No abstract record available.
Inventors
- 👤 John T Dewan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:00
CPC Classifications
F; F25; F25B; F25B21/00; F25B21/02; E; E21; E21B; E21B47/00; E21B47/01; E21B47/017; E21B47/0175; G; G01; G01T; G01T1/00; G01T1/16; G01T1/24; G01T1/244; G01V; G01V5/00; G01V5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2760078A
Cited
US2991366A
Cited
US3049620A
Cited
US3219825A
Cited
US3265893A
Cited
US3356846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |