US2911074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railroad brake shoes
Assignee: American Brake Shoe Co
•
Filing: 1956-08-10
•
Granted: 1959-11-03
•
Expires: 1976-08-10
Abstract
No abstract record available.
Inventors
- 👤 William S Fraula
- 👤 Erwin R Knauer
- 👤 Raymond E Spokes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:49
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/04; F16D65/06; F16D65/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1830341A
Cited
US2431393A
Cited
US2052808A
Cited
US2702770A
Cited
US2728701A
Cited
US2746090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |