Patent US1805658A successfully refreshed from Google Patents.
US1805658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triple valve cylinder cap
Assignee: Westinghouse Air Brake Co
•
Filing: 1928-08-21
•
Granted: 1931-05-19
•
Expires: 1948-08-21
Abstract
No abstract record available.
Inventors
- 👤 Clyde C Farmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:16
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/002; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/794; Y10T137/8085
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1934-05-18 | 1934-11-17 | 1935-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-05-18 | 1938-11-17 | 1939-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-05-18 | 1942-11-17 | 1943-05-19 | $7700.00 | Window Closed / Lapsed |