US2651390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake head arrangement
Assignee: American Steel Foundries
•
Filing: 1950-04-14
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Granted: 1953-09-08
•
Expires: 1970-04-14
Abstract
No abstract record available.
Inventors
- 👤 Walter R Polanin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:12
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/04; F16D65/06; F16D65/062; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7086; Y10T403/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US527296A
Cited
US1037091A
Cited
CH64369A
Cited
US1296042A
Cited
US2010531A
Cited
US2459776A
Cited
US2507062A
Cited
US2507063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |