US2484715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake mechanism for rail cars
Assignee: Jeffrey Manufacturing Co
•
Filing: 1948-05-17
•
Granted: 1949-10-11
•
Expires: 1968-05-17
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:11
CPC Classifications
B; B61; B61H; B61H13/00; B61H13/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1161598A
Cited
US1509919A
Cited
US1513219A
Cited
US1776957A
Cited
US1726015A
Cited
US1850861A
Cited
US1926966A
Cited
US2142622A
Cited
US2323913A
Cited
US2401316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-10 | 1953-04-11 | 1953-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-10 | 1957-04-11 | 1957-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-10 | 1961-04-11 | 1961-10-11 | $7700.00 | Window Closed / Lapsed |