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US2677801A
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Geophysical exploration method
Assignee: Centre National de la Recherche Scientifique
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Filing: 1951-09-24
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Granted: 1954-05-04
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Expires: 1971-09-24
Abstract
No abstract record available.
Inventors
- 👤 Cagniard Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:02
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/08; G01V3/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1902265A
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US1940340A
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US1997163A
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US1951387A
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US1951386A
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US2062630A
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US2108463A
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US2291692A
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US2359894A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |