US3482555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine valve spring arrangement
Assignee: International Motors LLC
•
Filing: 1968-06-24
•
Granted: 1969-12-09
•
Expires: 1988-06-24
Abstract
No abstract record available.
Inventors
- 👤 Mark Sherbinsky
- 👤 Millard J Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:31
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/12; F01L1/46; F01L1/462
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1974802A
Cited
DE659049C
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GB511012A
Cited
GB522998A
Cited
US2824554A
Cited
US3060916A
Cited
US3358659A
Cited
US3352293A
Cited
US3430614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |