Patent US3529488A successfully refreshed from Google Patents.
US3529488A
Expired / Lapsed
US
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High power hand brake and release mechanism therefor
Assignee: Universal Railway Devices Co
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Filing: 1968-07-24
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Granted: 1970-09-22
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Expires: 1988-07-24
Abstract
No abstract record available.
Inventors
- 👤 Eldred H Natschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:30
CPC Classifications
B; B61; B61H; B61H13/00; B61H13/02; B61H13/04; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20474; Y10T74/2048
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1926175A
Cited
US2318569A
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US2322398A
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US2848083A
Cited
US3173305A
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US3390590A
Cited
US3425294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |