US2824236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensitivity adjustment for radioactivity well logging
Assignee: Well Surveys Inc
•
Filing: 1954-05-10
•
Granted: 1958-02-18
•
Expires: 1974-05-10
Abstract
No abstract record available.
Inventors
- 👤 Swift Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:23
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/185; G01V; G01V5/00; G01V5/04; G01V5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2400190A
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US2476318A
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US2476005A
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GB608189A
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US2611803A
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US2493534A
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US2626979A
Cited
US2656498A
Cited
US2610226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |