Patent US2788511A successfully refreshed from Google Patents.
US2788511A
Expired / Lapsed
US
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Lightweight seismometer
Assignee: Texas Instruments Inc
•
Filing: 1953-08-24
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Granted: 1957-04-09
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Expires: 1973-08-24
Abstract
No abstract record available.
Inventors
- 👤 Elbert H Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:25
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)
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US2348225A
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US2316616A
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US2596048A
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US2407757A
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US2487029A
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US2533249A
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US2705314A
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US2657374A
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US2675533A
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US2651769A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-08 | 1960-10-08 | 1961-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-08 | 1964-10-08 | 1965-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-08 | 1968-10-08 | 1969-04-09 | $7700.00 | Window Closed / Lapsed |