US2436341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slip-indicating system for electrically propelled locomotives
Assignee: Westinghouse Electric Corp
•
Filing: 1945-11-08
•
Granted: 1948-02-17
•
Expires: 1965-11-08
Abstract
No abstract record available.
Inventors
- 👤 Sydney F Weybrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:40
CPC Classifications
B; B60; B60L; B60L3/00; B60L3/10; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2006173A
Cited
US2117196A
Cited
US2209826A
Cited
US2197643A
Cited
US2371832A
Cited
US2372145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-16 | 1951-08-18 | 1952-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-16 | 1955-08-18 | 1956-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-16 | 1959-08-18 | 1960-02-17 | $7700.00 | Window Closed / Lapsed |