US2942238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote control systems
Assignee: Westinghouse Air Brake Co
•
Filing: 1956-03-08
•
Granted: 1960-06-21
•
Expires: 1976-03-08
Abstract
No abstract record available.
Inventors
- 👤 Paul K Eckhardt
- 👤 Arthur P Jackel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:21
CPC Classifications
G; G08; G08C; G08C25/00; G08C25/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |