US3487640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for detecting rumble in an internal combustion engine
Assignee: Sinclair Research Inc
•
Filing: 1965-09-03
•
Granted: 1970-01-06
•
Expires: 1985-09-03
Abstract
No abstract record available.
Inventors
- 👤 Wolfgang J Wostl
- 👤 Joseph A Heintz
- 👤 Charles A Lease
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:44
CPC Classifications
G; G01; G01M; G01M15/00; G01M15/04; G01M15/08; G01L; G01L23/00; G01L23/08; G01L23/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3126733A
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US2192863A
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US2842956A
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US3030799A
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US3324711A
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US3289462A
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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) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |