US2964945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic brake fluid-level indicator
Assignee: Individual
•
Filing: 1957-06-07
•
Granted: 1960-12-20
•
Expires: 1977-06-07
Abstract
No abstract record available.
Inventors
- 👤 Edward L Walkowiak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:39
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/18; B60T17/22; B60T17/225; G; G01; G01F; G01F23/00; G01F23/30; G01F23/56; G01F23/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US686304A
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US772583A
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US1482852A
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US1644378A
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US1564701A
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FR651949A
Cited
US2387011A
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US2484163A
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US2615105A
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US2772331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |