Patent US2961073A successfully refreshed from Google Patents.
US2961073A
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US
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Parking brake
Assignee: Aerol Co Inc
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Filing: 1957-09-17
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Granted: 1960-11-22
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Expires: 1977-09-17
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Legge
- 👤 Milton E Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:24
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/04; F; F16; F16D; F16D65/00; F16D65/02; F16D65/04; F16D65/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1127203A
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US2124773A
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US2241728A
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US2288146A
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US2399654A
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US2431441A
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US2485993A
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US2823921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |