US3032707A
Expired / Lapsed
US
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Oscillographic method of internal combustion engine analysis
Assignee: Marquette Corp
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Filing: 1958-12-16
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Granted: 1962-05-01
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Expires: 1978-12-16
Abstract
No abstract record available.
Inventors
- 👤 John John H St
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:59
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/208; F; F02; F02P; F02P17/00; F02P17/02
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) | 1965-04-30 | 1965-10-30 | 1966-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-30 | 1969-10-30 | 1970-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-30 | 1973-10-30 | 1974-05-01 | $7700.00 | Window Closed / Lapsed |