US2468980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston sealing structure
Assignee: New York Air Brake LLC
•
Filing: 1944-08-02
•
Granted: 1949-05-03
•
Expires: 1964-08-02
Abstract
No abstract record available.
Inventors
- 👤 Matthew W Huber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:22
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/06; F16J9/061; F16J9/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US120565A
Cited
US246712A
Cited
US519314A
Cited
US1239726A
Cited
US1301438A
Cited
US1385508A
Cited
US2125766A
Cited
GB522024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-02 | 1952-11-01 | 1953-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-02 | 1956-11-01 | 1957-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-02 | 1960-11-01 | 1961-05-03 | $7700.00 | Window Closed / Lapsed |