Patent FR350214A successfully refreshed from Google Patents.
US2771592A
Expired / Lapsed
US
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Detecting and recording system for seismic waves
Assignee: Individual
•
Filing: 1953-01-09
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Granted: 1956-11-20
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Expires: 1973-01-09
Abstract
No abstract record available.
Inventors
- 👤 Jack W E Edmonson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:28
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/16; G01V1/18; G01V1/181
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB425329A
Cited
GB511042A
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US2571026A
Cited
US2476930A
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US2599775A
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US2659064A
Cited
US2653306A
Cited
US2638578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |