Patent US2395289A successfully refreshed from Google Patents.
US2395289A
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Method and apparatus for seismic prospecting
Assignee: ENGINEERING LAB Inc
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Filing: 1943-05-27
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Granted: 1946-02-19
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Expires: 1963-05-27
Abstract
No abstract record available.
Inventors
- 👤 Neufeld Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:30
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/32; G01V1/24
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) | 1949-02-18 | 1949-08-20 | 1950-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-02-18 | 1953-08-20 | 1954-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-02-18 | 1957-08-20 | 1958-02-19 | $7700.00 | Window Closed / Lapsed |