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US2492276A
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Timed track sander control
Assignee: New York Air Brake LLC
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Filing: 1946-10-03
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Granted: 1949-12-27
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Expires: 1966-10-03
Abstract
No abstract record available.
Inventors
- 👤 Elsworth John Van Varick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:49
CPC Classifications
B; B61; B61H; B61H11/00; B61H11/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US833307A
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US1598994A
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US1787686A
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US2148383A
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US2198031A
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US2243450A
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US2275647A
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US2386006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |