US2420550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fuel injection apparatus
Assignee: Individual
•
Filing: 1942-10-20
•
Granted: 1947-05-13
•
Expires: 1962-10-20
Abstract
No abstract record available.
Inventors
- 👤 Miller Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:56
CPC Classifications
F; F02; F02M; F02M57/00; F02M57/02; F02M47/00; F02M59/00; F02M59/20; F02M59/24; F02M59/26; F02M2700/00; F02M2700/07; F02M2700/078; F02M2700/13; F02M2700/1317; F02M2700/1335; F02M2700/1388; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/877; Y10T137/87708; Y10T137/87764
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US620829A
Cited
US681172A
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FR486973A
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US1800127A
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US1802933A
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US2027360A
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US2053312A
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US2150574A
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US2274315A
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US2245974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-12 | 1950-11-11 | 1951-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-12 | 1954-11-11 | 1955-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-12 | 1958-11-11 | 1959-05-13 | $7700.00 | Window Closed / Lapsed |