US2922070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seismic signal analysis with cathode ray storage tube
Assignee: California Research LLC
•
Filing: 1954-08-24
•
Granted: 1960-01-19
•
Expires: 1974-08-24
Abstract
No abstract record available.
Inventors
- 👤 Delmar O Seevers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:37
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2612634A
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US2524295A
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US2602921A
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US2570858A
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US2628689A
Cited
US2658579A
Cited
GB696229A
Cited
US2597683A
Cited
US2759045A
Cited
US2762862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |