US3406359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and apparatus for computing a function of sampled well logging measurements derived from multiple investigating devices
Assignee: Schlumberger Technology Corp
•
Filing: 1965-12-15
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Granted: 1968-10-15
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Expires: 1985-12-15
Abstract
No abstract record available.
Inventors
- 👤 Wilbur C Welz
- 👤 Jimmy G Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2600423A
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US2742605A
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US2884589A
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US2880389A
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US2874347A
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US2870259A
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US3185821A
Cited
US3329889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |