Patent US3021724A successfully refreshed from Google Patents.
US3021724A
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US
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Adjustable cam device
Assignee: Westinghouse Air Brake Co
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Filing: 1960-04-28
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Granted: 1962-02-20
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Expires: 1980-04-28
Abstract
No abstract record available.
Inventors
- 👤 Fritz O Seger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:42
CPC Classifications
F; F16; F16H; F16H53/00; F16H53/02; F16H53/04; B; B60; B60T; B60T15/00; B60T15/02; B60T15/04; B60T15/048; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87056; Y10T137/87064; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/21; Y10T74/2101; Y10T74/2102
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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |