US2639210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording decelerometer
Assignee: Individual
•
Filing: 1948-08-24
•
Granted: 1953-05-19
•
Expires: 1968-08-24
Abstract
No abstract record available.
Inventors
- 👤 Alexander F Robertson
- 👤 John R Tallackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:35
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/09; G01P15/0907; G01P1/00; G01P1/12; G01P1/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2163847A
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US2225381A
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US2178471A
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US2360639A
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US2371626A
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US2411401A
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US2501352A
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US2527562A
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US2441162A
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US2488586A
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US2428369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |