US3517652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-cycle engine
Assignee: JOHNSON ENGINE WORKS CO
•
Filing: 1968-05-10
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Granted: 1970-06-30
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Expires: 1988-05-10
Abstract
No abstract record available.
Inventors
- 👤 Victor N Albertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:05
CPC Classifications
F; F01; F01B; F01B9/00; F01B9/02; F01B9/026; F01B9/023; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/24; F02B75/246; F02B75/02; F02B2075/022; F02B2075/025; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US775605A
Cited
GB190717026A
Cited
US959748A
Cited
US1045505A
Cited
US1295947A
Cited
GB218308A
Cited
US2495445A
Cited
DE800514C
Cited
US2628602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |