Patent US3500725A successfully refreshed from Google Patents.
US3500725A
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US
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Redundant brake actuator
Assignee: Doosan Bobcat North America Inc
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Filing: 1968-04-30
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Granted: 1970-03-17
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Expires: 1988-04-30
Abstract
No abstract record available.
Inventors
- 👤 Louis A Haddock Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:05
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/14; F16D65/16; F16D65/22; B; B60; B60T; B60T11/00; B60T11/10; B60T11/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2398910A
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US2972866A
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US3056264A
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US3292371A
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US3268038A
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US3382675A
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US3355887A
Cited
US3403602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |