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US2985488A
Expired / Lapsed
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Tractor-trailer brake system
Assignee: ZF Active Safety US Inc
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Filing: 1958-05-12
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Granted: 1961-05-23
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Expires: 1978-05-12
Abstract
No abstract record available.
Inventors
- 👤 Stelzer William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:05
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2434050A
Cited
US2634742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |