US3528301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust seal for brake piston
Assignee: ZF Active Safety US Inc
•
Filing: 1968-07-01
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Granted: 1970-09-15
•
Expires: 1988-07-01
Abstract
No abstract record available.
Inventors
- 👤 Darwin A Wasmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:43
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/14; F16D65/16; F16D65/18; F16J; F16J15/00; F16J15/50; F16J15/52; F16D2121/00; F16D2121/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3273675A
Cited
FR1323614A
Cited
US3195360A
Cited
US3189360A
Cited
DE1223633B
Cited
US3402790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |