US3490423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable stroke hydraulic valve lifter
Assignee: Motors Liquidation Co
•
Filing: 1968-06-20
•
Granted: 1970-01-20
•
Expires: 1988-06-20
Abstract
No abstract record available.
Inventors
- 👤 Rudolph C Shunta
- 👤 William H Haverdink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:37
CPC Classifications
F; F01; F01L; F01L13/00; F01L13/0015; F01L13/0031; F01L1/00; F01L1/20; F01L1/22; F01L1/24; F01L1/245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA464098A
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US2011864A
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US2931347A
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US3385274A
Cited
US3406668A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |