US2449657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston
Assignee: American Motors Corp
•
Filing: 1942-06-19
•
Granted: 1948-09-21
•
Expires: 1962-06-19
Abstract
No abstract record available.
Inventors
- 👤 Floyd F Kishline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:10
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/06; F01P; F01P3/00; F01P3/06; F01P3/08; F05; F05C; F05C2201/00; F05C2201/02; F05C2201/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1073197A
Cited
US1512718A
Cited
US1466679A
Cited
US1628652A
Cited
US2174644A
Cited
US2142175A
Cited
US3341836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |