US3000461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonic geophysical exploration
Assignee: Individual
•
Filing: 1958-02-21
•
Granted: 1961-09-19
•
Expires: 1978-02-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Hasbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:11
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/36; G01V1/362
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2440971A
Cited
US2767389A
Cited
US2688124A
Cited
US2827619A
Cited
US2866512A
Cited
US2841777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |