US2767968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective device for the master cylinder of hydraulic brake systems
Assignee: Individual
•
Filing: 1953-02-26
•
Granted: 1956-10-23
•
Expires: 1973-02-26
Abstract
No abstract record available.
Inventors
- 👤 Buettner Arthur J Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:29
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/16; B60T11/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1874742A
Cited
US2013518A
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US2137054A
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US2258019A
Cited
US2422070A
Cited
US2541862A
Cited
US2638748A
Cited
US2613013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |