Patent US2766737A successfully refreshed from Google Patents.
US2766737A
Expired / Lapsed
US
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Injection valve for rotary type internal combustion engine
Assignee: Individual
•
Filing: 1954-06-08
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Granted: 1956-10-16
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Expires: 1974-06-08
Abstract
No abstract record available.
Inventors
- 👤 Sprinzing William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:59
CPC Classifications
F; F02; F02B; F02B53/00; F02B2730/00; F02B2730/05; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB134073A
Cited
US923054A
Cited
US894492A
Cited
CH44897A
Cited
US1645170A
Cited
US2468451A
Cited
US2484009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |