Patent US3201972A successfully refreshed from Google Patents.
US3201972A
Expired / Lapsed
US
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Knock detection instrument
Assignee: Standard Oil Co
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Filing: 1962-03-15
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Granted: 1965-08-24
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Expires: 1982-03-15
Abstract
No abstract record available.
Inventors
- 👤 Warren H Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:03
CPC Classifications
G; G01; G01L; G01L23/00; G01L23/22; G01L23/221; G01L23/222; G01L23/225; G01M; G01M15/00; G01M15/04; G01M15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |