US1487692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-pressure brake
Assignee: Westinghouse Air Brake Co
•
Filing: 1923-03-07
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Granted: 1924-03-18
•
Expires: 1943-03-07
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:59
CPC Classifications
B; B60; B60T; B60T15/00; B60T15/02; B60T15/18; B60T15/24; B60T15/30; B60T15/302; B60T15/304
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-03-18 | 1927-09-17 | 1928-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-03-18 | 1931-09-17 | 1932-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-03-18 | 1935-09-17 | 1936-03-18 | $7700.00 | Window Closed / Lapsed |