US2861843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined automatic and straight-air fluid pressure brake equipment
Assignee: Westinghouse Air Brake Co
•
Filing: 1955-05-23
•
Granted: 1958-11-25
•
Expires: 1975-05-23
Abstract
No abstract record available.
Inventors
- 👤 Ronald J Bentz
- 👤 William B Jeffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 22:20
CPC Classifications
B; B60; B60T; B60T15/00; B60T15/02; B60T15/18; B60T15/24; B60T15/30; B60T15/302; B60T15/304; B60T13/00; B60T13/10; B60T13/24; B60T13/26; B60T13/266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1693943A
Cited
US2135007A
Cited
US2152257A
Cited
US2234897A
Cited
US2289559A
Cited
US2380507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |