US2771960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interval velocity seismic logging
Assignee: California Research LLC
•
Filing: 1951-09-11
•
Granted: 1956-11-27
•
Expires: 1971-09-11
Abstract
No abstract record available.
Inventors
- 👤 Neal J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:52
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/52; Y; Y10; Y10S; Y10S367/00; Y10S367/911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2191120A
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US2088588A
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US2233992A
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US2207281A
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US2596023A
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US2506836A
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US2679205A
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US2651027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |