US2585658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve seat insert
Assignee: Curtiss Wright Corp
•
Filing: 1947-07-11
•
Granted: 1952-02-12
•
Expires: 1967-07-11
Abstract
No abstract record available.
Inventors
- 👤 George H Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:54
CPC Classifications
F; F01; F01L; F01L3/00; F01L3/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1435029A
Cited
US1756337A
Cited
US1891460A
Cited
US1949613A
Cited
US2114934A
Cited
US1988966A
Cited
US2035165A
Cited
US2179165A
Cited
US2350905A
Cited
US2366520A
Cited
US2429778A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |