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US3518679A
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US
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Well logging system employing threeconductor logging cable
Assignee: Mobil Oil AS
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Filing: 1969-04-22
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Granted: 1970-06-30
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Expires: 1989-04-22
Abstract
No abstract record available.
Inventors
- 👤 Willett F Baldwin
- 👤 Vasel R Slover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:16
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/12; G; G01; G01V; G01V1/00; G01V1/40; G01V1/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3223968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |