US3391335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of magnetic field gradient measuring logs to determine the magnetization of the earth's formations along a borehole
Assignee: Mobil Oil AS
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Filing: 1965-06-28
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Granted: 1968-07-02
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Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 Bobbie J Patton
- 👤 John L Fitch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:13
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2524360A
Cited
US2664542A
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US2716730A
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US3187252A
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US3263161A
Cited
US3317821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |