Patent US2658578A successfully refreshed from Google Patents.
US2658578A
Expired / Lapsed
US
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Seismic prospecting
Assignee: Individual
•
Filing: 1948-10-05
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Granted: 1953-11-10
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Expires: 1968-10-05
Abstract
No abstract record available.
Inventors
- 👤 Charles W Oliphant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:47
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2046104A
Cited
US2216452A
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US2354548A
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US2390187A
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US2482233A
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US2555806A
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US2576775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |