US3401773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cement logging of cased boreholes
Assignee: Schlumberger Technology Corp
•
Filing: 1967-12-04
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Granted: 1968-09-17
•
Expires: 1987-12-04
Abstract
No abstract record available.
Inventors
- 👤 Iii Judson Bruce Synnott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/44; G01V1/48; G01V1/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3265151A
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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) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |