Patent US3532881A successfully refreshed from Google Patents.
US3532881A
Expired / Lapsed
US
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Submarine radioactivity logging technique
Assignee: Schlumberger Technology Corp
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Filing: 1968-01-05
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Granted: 1970-10-06
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Expires: 1988-01-05
Abstract
No abstract record available.
Inventors
- 👤 John T Dewan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:24
CPC Classifications
G; G01; G01V; G01V5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2607996A
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US2725486A
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US2781453A
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US2942111A
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SU125631A1
Cited
US3159745A
Cited
US3321625A
Cited
US3255353A
Cited
US3254221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |