US2702097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination wheel and disk railway brake
Assignee: American Steel Foundries
•
Filing: 1951-01-11
•
Granted: 1955-02-15
•
Expires: 1971-01-11
Abstract
No abstract record available.
Inventors
- 👤 Carl E Tack
- 👤 Donald E Cummings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:46
CPC Classifications
B; B61; B61H; B61H11/00; B61H11/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US345093A
Cited
US1686648A
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US2438482A
Cited
US2357619A
Cited
US2360967A
Cited
US2418057A
Cited
US2550732A
Cited
US2497417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-14 | 1958-08-16 | 1959-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-14 | 1962-08-16 | 1963-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-14 | 1966-08-16 | 1967-02-15 | $7700.00 | Window Closed / Lapsed |