Patent US3500970A successfully refreshed from Google Patents.
US3500970A
Expired / Lapsed
US
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Brake having spring engagement and fluid pressure release
Assignee: Horton Manufacturing Co Inc
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Filing: 1967-12-06
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Granted: 1970-03-17
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Expires: 1987-12-06
Abstract
No abstract record available.
Inventors
- 👤 Hugh K Schilling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:20
CPC Classifications
F; F16; F16D; F16D59/00; F16D59/02; F16D55/00; F16D55/24; F16D55/26; F16D55/28; F16D2055/0004; F16D2055/0058
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |