US2814680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniature circuit controllers
Assignee: Westinghouse Air Brake Co
•
Filing: 1954-05-19
•
Granted: 1957-11-26
•
Expires: 1974-05-19
Abstract
No abstract record available.
Inventors
- 👤 James W Sherrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:32
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US559792A
Cited
US1362661A
Cited
US1521591A
Cited
US1547745A
Cited
US1752213A
Cited
US2069171A
Cited
US2020402A
Cited
US2286077A
Cited
US2332554A
Cited
US2382970A
Cited
US2503569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |