Patent US3385112A successfully refreshed from Google Patents.
US3385112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for checking internal combustion engines
Assignee: Individual
•
Filing: 1965-07-16
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Granted: 1968-05-28
•
Expires: 1985-07-16
Abstract
No abstract record available.
Inventors
- 👤 Earl C Pruitt
- 👤 Calvin L Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:25
CPC Classifications
G; G01; G01M; G01M15/00; G01M15/04; G01M15/10; G01M15/102; G01M15/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2858697A
Cited
US1028142A
Cited
US1602136A
Cited
US1473537A
Cited
US1729732A
Cited
US2211196A
Cited
US2675020A
Cited
US2754138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |