Patent US3298330A successfully refreshed from Google Patents.
US3298330A
Expired / Lapsed
US
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Rotary piston engine
Assignee: Yanmar Co Ltd
•
Filing: 1965-04-01
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Granted: 1967-01-17
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Expires: 1985-04-01
Abstract
No abstract record available.
Inventors
- 👤 Ito Ryusuke
- 👤 Tado Hiroshi
- 👤 Jinno Seizo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:56
CPC Classifications
F; F02; F02B; F02B55/00; F02B55/08; F02B55/10; F02B53/00; F02B2053/005; F02B2730/00; F02B2730/01; F02B2730/018; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2988065A
Cited
US3042009A
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US3012550A
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US3091386A
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US3007460A
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US3102516A
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US3134537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |