Patent US3525272A successfully refreshed from Google Patents.
US3525272A
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Multiposition control handle having detent means
Assignee: Westinghouse Air Brake Co
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Filing: 1967-10-20
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Granted: 1970-08-25
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Expires: 1987-10-20
Abstract
No abstract record available.
Inventors
- 👤 Paul E Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:58
CPC Classifications
G; G05; G05G; G05G5/00; G05G5/06; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20576; Y10T74/20636; Y10T74/20642; Y10T74/20654; Y10T74/20672
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US594946A
Cited
GB191507819A
Cited
US2821091A
Cited
US3090458A
Cited
US3128635A
Cited
US3048657A
Cited
US3139766A
Cited
US3204734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |