US2797665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo-assisted liquid pressure braking systems for vehicles
Assignee: Whitnash PLC
•
Filing: 1953-03-30
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Granted: 1957-07-02
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Expires: 1973-03-30
Abstract
No abstract record available.
Inventors
- 👤 Chouings Leslie Cyril
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:06
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/241; B60T13/242; B60T13/245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2398252A
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US2433953A
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US2377699A
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US2393524A
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US2638747A
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US2598604A
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US2617261A
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US2658347A
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US2631433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |