US2581334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine air induction control system
Assignee: Individual
•
Filing: 1947-01-18
•
Granted: 1952-01-01
•
Expires: 1967-01-18
Abstract
No abstract record available.
Inventors
- 👤 Reggio Ferdinando Carlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:31
CPC Classifications
F; F02; F02D; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0225; F02D2700/0246; Y; Y10; Y10S; Y10S60/00; Y10S60/913
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1655683A
Cited
US764572A
Cited
US1371444A
Cited
US1508707A
Cited
US1816737A
Cited
US1816787A
Cited
US2148230A
Cited
US2020224A
Cited
US2082397A
Cited
US2088954A
Cited
US2284687A
Cited
US2217364A
Cited
GB479278A
Cited
US2189475A
Cited
US2187737A
Cited
US2216699A
Cited
US2208689A
Cited
US2403398A
Cited
US2373139A
Cited
US2283175A
Cited
US2403399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |