US2928489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seismic record viewer
Assignee: Texas Instruments Inc
•
Filing: 1955-04-13
•
Granted: 1960-03-15
•
Expires: 1975-04-13
Abstract
No abstract record available.
Inventors
- 👤 Perry Edward Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:21
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE263797C
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US888236A
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US1139476A
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US1867176A
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US2454959A
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US2482813A
Cited
US2604955A
Cited
US2620898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |