Patent US2997139A successfully refreshed from Google Patents.
US2997139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake actuator system
Assignee: Individual
•
Filing: 1957-04-08
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Granted: 1961-08-22
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Expires: 1977-04-08
Abstract
No abstract record available.
Inventors
- 👤 Brisson Louis Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:23
CPC Classifications
F; F16; F16D; F16D51/00; F16D51/46; F16D51/48; F16D51/52; F16D65/00; F16D65/14; F16D65/16; F16D65/22; F16D2121/00; F16D2121/02; F16D2121/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1799227A
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US2034977A
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US1972829A
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US1998533A
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US2213948A
Cited
US2285310A
Cited
US2382268A
Cited
US2375392A
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US2385168A
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US2513015A
Cited
US2657768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |