Patent US2530507A successfully refreshed from Google Patents.
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
2026-11-08 14:03
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1137877A
Cited
US1080216A
Cited
US1149728A
Cited
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 |