US2561445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk brake
Assignee: Westinghouse Air Brake Co
•
Filing: 1947-03-12
•
Granted: 1951-07-24
•
Expires: 1967-03-12
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Mccune
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:01
CPC Classifications
B; B61; B61H; B61H5/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US340580A
Cited
US2174395A
Cited
US2211888A
Cited
US2218615A
Cited
US2204807A
Cited
US2355122A
Cited
US2381941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |