Patent US2620890A successfully refreshed from Google Patents.
US2620890A
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Seismic prospecting
Assignee: Texaco Inc
•
Filing: 1947-12-01
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Granted: 1952-12-09
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Expires: 1967-12-01
Abstract
No abstract record available.
Inventors
- 👤 Burton D Lee
- 👤 Herzog Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:46
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2144812A
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US2394990A
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US2243729A
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US2427421A
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US2378389A
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US2395289A
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US2436503A
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US2441065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |