US3380440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-damped valve-seating compensator
Assignee: Individual
•
Filing: 1967-06-05
•
Granted: 1968-04-30
•
Expires: 1987-06-05
Abstract
No abstract record available.
Inventors
- 👤 Niel C Thuesen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:10
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/20; F01L1/22; F01L1/24; F01L1/245; F01L1/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1074121A
Cited
US1232352A
Cited
US1516310A
Cited
US2878796A
Cited
US3211138A
Cited
US3185139A
Cited
US3183901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |