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US2433916A
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Control mechanism for propulsion systems
Assignee: Westinghouse Air Brake Co
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Filing: 1944-12-28
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Granted: 1948-01-06
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Expires: 1964-12-28
Abstract
No abstract record available.
Inventors
- 👤 Harry C May
- 👤 Roy R Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:10
CPC Classifications
F; F02; F02D; F02D27/00; B; B63; B63H; B63H21/00; B63H21/22; B63H23/00; B63H23/32; B63H23/34; B63H23/35; B63H23/02; B63H23/10; B63H23/12; B63H23/16; Y; Y10; Y10S; Y10S74/00; Y10S74/08; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18088; Y10T74/18096
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2289654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-05 | 1951-07-07 | 1952-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-05 | 1955-07-07 | 1956-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-05 | 1959-07-07 | 1960-01-06 | $7700.00 | Window Closed / Lapsed |