Patent US3487818A successfully refreshed from Google Patents.
US3487818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Short stroke two-cycle engine
Assignee: JOHN J DINEEN
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Filing: 1968-01-25
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Granted: 1970-01-06
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Expires: 1988-01-25
Abstract
No abstract record available.
Inventors
- 👤 John J Dineen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:54
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/16; F01; F01B; F01B9/00; F01B9/02; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB257163A
Cited
US750336A
Cited
US1316437A
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US1318471A
Cited
US1042505A
Cited
US1229217A
Cited
FR700813A
Cited
US2545999A
Cited
GB749864A
Cited
US3119462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |