US2753550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle reporting systems
Assignee: Westinghouse Air Brake Co
•
Filing: 1951-03-03
•
Granted: 1956-07-03
•
Expires: 1971-03-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Richard W Treharne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:13
CPC Classifications
B; B61; B61L; B61L25/00; B61L25/02; B61L25/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2021034A
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US2320150A
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US2492388A
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US2488815A
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GB627081A
Cited
US2597517A
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US2673292A
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US2597518A
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US2693525A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |