US3270719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure reducing device for diesel type rotary engines
Assignee: Yanmar Co Ltd
•
Filing: 1962-06-05
•
Granted: 1966-09-06
•
Expires: 1982-06-05
Abstract
No abstract record available.
Inventors
- 👤 Hamada Yoshitsugu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:50
CPC Classifications
F; F02; F02B; 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)
US1751989A
Cited
US1691953A
Cited
US1890584A
Cited
US2054413A
Cited
US2742380A
Cited
US2988065A
Cited
US3053238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |