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Patent US2769918A successfully refreshed from Google Patents.
US2769918A
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Epithermal neutron logging method using collimation
Assignee: Gulf Research and Development Co
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Filing: 1952-10-02
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Granted: 1956-11-06
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Expires: 1972-10-02
Abstract
No abstract record available.
Inventors
- 👤 Charles W Tittle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:17
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2308361A
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US2220509A
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US2322634A
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US2369672A
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US2508772A
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US2648776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |