US2290589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary inertia device
Assignee: Westinghouse Air Brake Co
•
Filing: 1941-01-31
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Granted: 1942-07-21
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Expires: 1961-01-31
Abstract
No abstract record available.
Inventors
- 👤 Adelbert A Steinmiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:05
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/72; B60T8/74; G; G01; G01P; G01P15/00; G01P15/02; G01P15/03; G01P15/032; G01P15/034; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2121; Y10T74/2131
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-07-20 | 1946-01-19 | 1946-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-07-20 | 1950-01-19 | 1950-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-07-20 | 1954-01-19 | 1954-07-21 | $7700.00 | Window Closed / Lapsed |