Patent US2917134A successfully refreshed from Google Patents.
US2917134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tread brake arrangement
Assignee: American Steel Foundries
•
Filing: 1955-03-11
•
Granted: 1959-12-15
•
Expires: 1975-03-11
Abstract
No abstract record available.
Inventors
- 👤 John A Buvelot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:36
CPC Classifications
B; B61; B61H; B61H13/00; B61H13/20; B61H13/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |