US3022852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for producing a low frequency seismic signal
Assignee: MARINE RES Co
•
Filing: 1958-04-08
•
Granted: 1962-02-27
•
Expires: 1978-04-08
Abstract
No abstract record available.
Inventors
- 👤 Jr George M Pavey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:41
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/104; G01V1/108
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190818025A
Cited
US1500243A
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US2556299A
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US2480626A
Cited
US2729300A
Cited
US2745507A
Cited
US2766837A
Cited
US2772746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |