US2446920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion engine and air cleaner therefor
Assignee: Pioneer Gen E Motor Corp
•
Filing: 1945-01-08
•
Granted: 1948-08-10
•
Expires: 1965-01-08
Abstract
No abstract record available.
Inventors
- 👤 Goldberg Harry
- 👤 Stanley Z Siwek
- 👤 William J Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:40
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/04; F02M35/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1608286A
Cited
US1414993A
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US1971550A
Cited
US2018755A
Cited
US1985481A
Cited
US2274593A
Cited
GB496595A
Cited
US2259938A
Cited
US2374412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |