US3403661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine cylinder block and liner seal construction
Assignee: Cummins Inc
•
Filing: 1966-07-27
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Granted: 1968-10-01
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Expires: 1986-07-27
Abstract
No abstract record available.
Inventors
- 👤 Donald E Valentine
- 👤 Clair Glenn W St
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:05
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/02; F02F1/10; F02F1/16; F02F1/163; F02F11/00; F02F11/005; F02M; F02M51/00; F02M51/02; F02M55/00; F01; F01L; F01L2710/00; F01L2710/006
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) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |