Patent US3497040A successfully refreshed from Google Patents.
US3497040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring release means for brake shoes
Assignee: Rockwell-Standard Corp
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Filing: 1968-04-24
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Granted: 1970-02-24
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Expires: 1988-04-24
Abstract
No abstract record available.
Inventors
- 👤 Richard L Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:53
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/04; F16D65/08; F16D65/09; F16D51/00; F16D51/16; F16D51/32; F16D51/34; F16D51/38
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) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |