US2957461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overhead valve engine
Assignee: Old Carco LLC
•
Filing: 1957-10-02
•
Granted: 1960-10-25
•
Expires: 1977-10-02
Abstract
No abstract record available.
Inventors
- 👤 Luoma Pauline
- 👤 Kane Gerald
- 👤 William E Drinkard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:22
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4285; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02B2275/00; F02B2275/34; F02F2001/244; F02F2001/245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1306949A
Cited
US1403350A
Cited
US1488285A
Cited
US1698995A
Cited
US2126939A
Cited
GB635240A
Cited
FR968120A
Cited
CH276820A
Cited
US2700969A
Cited
US2523611A
Cited
US2669227A
Cited
US2765781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |