US2802428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel slide protection system for electric locomotive
Assignee: Individual
•
Filing: 1952-02-21
•
Granted: 1957-08-13
•
Expires: 1972-02-21
Abstract
No abstract record available.
Inventors
- 👤 Jr John Redyard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:14
CPC Classifications
B; B61; B61C; B61C15/00; B61C15/08; B61C15/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1336562A
Cited
US2088485A
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US2336052A
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US2284843A
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US2361099A
Cited
US2332140A
Cited
US2381827A
Cited
US2403933A
Cited
US2436341A
Cited
US2468018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |