US2479085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway car brake
Assignee: Bettendorf Co
•
Filing: 1945-06-08
•
Granted: 1949-08-16
•
Expires: 1965-06-08
Abstract
No abstract record available.
Inventors
- 👤 Frederick S Schrage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:49
CPC Classifications
B; B61; B61H; B61H5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1079357A
Cited
US1909744A
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US2174397A
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US2174409A
Cited
US2236898A
Cited
US2174400A
Cited
US2204807A
Cited
US2267560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-15 | 1953-02-14 | 1953-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-15 | 1957-02-14 | 1957-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-15 | 1961-02-14 | 1961-08-16 | $7700.00 | Window Closed / Lapsed |