US2591201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch control apparatus
Assignee: Westinghouse Air Brake Co
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Filing: 1949-02-12
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Granted: 1952-04-01
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Expires: 1969-02-12
Abstract
No abstract record available.
Inventors
- 👤 Howard C Rowand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:17
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/02; F16D48/0206; F16H; F16H61/00; F16H61/02; F16H61/0262; F16D2048/0257; F16D2048/0263; F16D2048/0266; F16D2048/0281; F16H2708/00; F16H2708/02; F16H2708/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |