US2947384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway car brake mechanism
Assignee: Buffalo Brake Beam Co
•
Filing: 1957-01-23
•
Granted: 1960-08-02
•
Expires: 1977-01-23
Abstract
No abstract record available.
Inventors
- 👤 Charles R Busch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:46
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/224; F16D55/2245; B; B61; B61H; B61H5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1620508A
Cited
US840991A
Cited
US925640A
Cited
US972899A
Cited
US2365460A
Cited
US2467356A
Cited
US2710676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |