US2711801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable brake shoe
Assignee: Rockwell Spring and Axle Co
•
Filing: 1951-08-07
•
Granted: 1955-06-28
•
Expires: 1971-08-07
Abstract
No abstract record available.
Inventors
- 👤 Ralph K Super
- 👤 Clair L Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:53
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/04; F16D65/08; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44641; Y10T24/44769; Y10T24/44923; Y10T24/45; Y10T24/45005; Y10T24/45099; Y10T403/00; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1248723A
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US1465975A
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US2013981A
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US2068633A
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US2058733A
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US2112247A
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US2140064A
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US2328757A
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US2432983A
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US2511129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |