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Patent US3368073A successfully refreshed from Google Patents.
US3368073A
Expired / Lapsed
US
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Train speed control system
Assignee: Westinghouse Air Brake Co
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Filing: 1965-10-01
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Granted: 1968-02-06
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Expires: 1985-10-01
Abstract
No abstract record available.
Inventors
- 👤 George W Baughman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:15
CPC Classifications
B; B61; B61L; B61L3/00; B61L3/02; B61L3/08; B60; B60L; B60L2200/00; B60L2200/26; B60L2220/00; B60L2220/10; B60L2220/12; B60L2220/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2713657A
Cited
US3270199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |