US2643746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum operated brake actuator
Assignee: Individual
•
Filing: 1948-12-31
•
Granted: 1953-06-30
•
Expires: 1968-12-31
Abstract
No abstract record available.
Inventors
- 👤 Walter H Righter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:51
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1608203A
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US1814535A
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US1918025A
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US2109101A
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US2015717A
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US2087305A
Cited
US2102461A
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US2164921A
Cited
US2566614A
Cited
US2320182A
Cited
US2301218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |