US2933164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible brake shoe assembly
Assignee: Westinghouse Air Brake Co
•
Filing: 1956-12-14
•
Granted: 1960-04-19
•
Expires: 1976-12-14
Abstract
No abstract record available.
Inventors
- 👤 Clarence R Baechtel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:34
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)
GB190311622A
Cited
US858493A
Cited
US887243A
Cited
US1022397A
Cited
US1882959A
Cited
US1893306A
Cited
US1914230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |