US2616404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for supplying auxiliary fuel or antiknock fluid to internal-combustion engines
Assignee: Ethyl Corp
•
Filing: 1948-10-07
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Granted: 1952-11-04
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Expires: 1968-10-07
Abstract
No abstract record available.
Inventors
- 👤 Bartholomew Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:09
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/14; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2514; Y10T137/2521
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1676828A
Cited
USRE22447E
Cited
US2377607A
Cited
US2382625A
Cited
US2477481A
Cited
US2447793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |