US2530507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection apparatus and control
Assignee: Individual
•
Filing: 1945-10-25
•
Granted: 1950-11-21
•
Expires: 1965-10-25
Abstract
No abstract record available.
Inventors
- 👤 John F Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:31
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/02; F02M59/04; F02M59/06; F02M59/20; F02M59/34; F02M2700/00; F02M2700/13; F02M2700/1317; F02M2700/1358
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1137877A
Cited
US1080216A
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US1149728A
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US1239060A
Cited
US1597787A
Cited
US1653885A
Cited
US1902930A
Cited
US1962551A
Cited
US2058591A
Cited
US2174898A
Cited
US2107079A
Cited
US2192660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |