US3518976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for controlling valve-open time of internal combustion engines
Assignee: NIEL C THUESEN
•
Filing: 1968-11-29
•
Granted: 1970-07-07
•
Expires: 1988-11-29
Abstract
No abstract record available.
Inventors
- 👤 Niel C Thuesen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:13
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/20; F01L1/22; F01L1/24; F01L1/245; F01L1/12; F01L1/14; F01L1/146; F01L1/34; F01L13/00; F01L13/0015; F01L13/0031; F01L1/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2305787A
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US2484109A
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US2494183A
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US2780912A
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US2804061A
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US2931347A
Cited
US3066659A
Cited
US3382854A
Cited
US3361122A
Cited
US3404666A
Cited
US3439661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |