US3470856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Four stroke stratified engine
Assignee: International Motors LLC
•
Filing: 1968-01-05
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Granted: 1969-10-07
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Expires: 1988-01-05
Abstract
No abstract record available.
Inventors
- 👤 John W Gaines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:36
CPC Classifications
F; F02; F02B; F02B17/00; F01; F01L; F01L13/00; F01L13/0015; F01L13/0036; F01L13/0042; F02B75/00; F02B75/10; F02M; F02M2700/00; F02M2700/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1582763A
Cited
US1688164A
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US2297376A
Cited
US2528983A
Cited
US3023870A
Cited
US3262435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |