Patent US3202232A successfully refreshed from Google Patents.
Patent US2035569A successfully refreshed from Google Patents.
US2035569A
Expired / Lapsed
US
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Control of the supply of liquid fuel to the air charge of internal combustion engines
Assignee: Individual
•
Filing: 1933-11-22
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Granted: 1936-03-31
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Expires: 1953-11-22
Abstract
No abstract record available.
Inventors
- 👤 Ricardo Harry Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:54
CPC Classifications
F; F02; F02D; F02D1/00; F02D2700/00; F02D2700/02; F02D2700/0269; F02D2700/0282; F02D2700/0284; F02D2700/0289
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) | 1939-03-31 | 1939-09-30 | 1940-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-03-31 | 1943-09-30 | 1944-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-03-31 | 1947-09-30 | 1948-03-31 | $7700.00 | Window Closed / Lapsed |