Patent US2089577A successfully refreshed from Google Patents.
US2089577A
Expired / Lapsed
US
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Combustion chamber of fuel-injection engines
Assignee: John Fowler & Co Leeds Ltd
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Filing: 1935-06-26
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Granted: 1937-08-10
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Expires: 1955-06-26
Abstract
No abstract record available.
Inventors
- 👤 Sanders Arthur Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:37
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/08; F02B19/14; F02B21/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-08-09 | 1941-02-08 | 1941-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-08-09 | 1945-02-08 | 1945-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-08-09 | 1949-02-08 | 1949-08-10 | $7700.00 | Window Closed / Lapsed |