US2925138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of geophysical exploration
Assignee: Western Geophysical Company of America
•
Filing: 1956-03-09
•
Granted: 1960-02-16
•
Expires: 1976-03-09
Abstract
No abstract record available.
Inventors
- 👤 Carl H Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:09
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2099536A
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US2580636A
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US2620890A
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US2693862A
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US2628689A
Cited
US2698928A
Cited
US2759551A
Cited
US2756836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |