US2674121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charge indicating means for fluid pressure train brake systems
Assignee: Westinghouse Air Brake Co
•
Filing: 1949-06-08
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Granted: 1954-04-06
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Expires: 1969-06-08
Abstract
No abstract record available.
Inventors
- 👤 Andrew T Gorman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:02
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/18; B60T17/22; B60T17/228
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1007178A
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US1416210A
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US1344340A
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GB135869A
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US1681551A
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US1883522A
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US1881266A
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US2177520A
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US2444358A
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US2450772A
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US2449556A
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US2457401A
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US2561700A
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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) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |