Patent US2989956A successfully refreshed from Google Patents.
US2989956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intake manifold for v engines and the like
Assignee: Old Carco LLC
•
Filing: 1954-10-01
•
Granted: 1961-06-27
•
Expires: 1974-10-01
Abstract
No abstract record available.
Inventors
- 👤 William E Drinkard
- 👤 Philip M Rothwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:56
CPC Classifications
F; F02; F02M; F02M1/00; F02B; F02B75/00; F02B75/16; F02B75/18; F02B2075/1804; F02B2075/1832; F02B75/22; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/4392
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2603199A
Cited
US2012902A
Cited
US2098424A
Cited
FR834158A
Cited
GB515410A
Cited
US2124403A
Cited
US2260309A
Cited
US2686506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |