US2987055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion air supply control for internal combustion engines
Assignee: Fairbanks Morse and Co
•
Filing: 1959-03-09
•
Granted: 1961-06-06
•
Expires: 1979-03-09
Abstract
No abstract record available.
Inventors
- 👤 Ludwig J Grauel
- 👤 Carl E Nilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:26
CPC Classifications
F; F02; F02B; F02B33/00; F02B33/32; F02B33/34; F02B43/00; F02B2710/00; F02B2710/03; F02B2710/034; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1962283A
Cited
US2193927A
Cited
FR815873A
Cited
US2165176A
Cited
US2330866A
Cited
US2882880A
Cited
US2865164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |