US2062151A
Expired / Lapsed
US
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Method of making sub-surface determinations
Assignee: Geophysical Research Corp
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Filing: 1934-11-16
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Granted: 1936-11-24
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Expires: 1954-11-16
Abstract
No abstract record available.
Inventors
- 👤 Benjamin B Weatherby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:20
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/42; G01V1/003; G01V2210/00; G01V2210/10; G01V2210/16; G01V2210/161
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-11-24 | 1940-05-25 | 1940-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-11-24 | 1944-05-25 | 1944-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-11-24 | 1948-05-25 | 1948-11-24 | $7700.00 | Window Closed / Lapsed |