US2752012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slack adjuster for air brakes
Assignee: LOCOMOTIVE FINISHED MATERIAL C
•
Filing: 1952-02-13
•
Granted: 1956-06-26
•
Expires: 1972-02-13
Abstract
No abstract record available.
Inventors
- 👤 Moorhead Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:42
CPC Classifications
B; B61; B61H; B61H15/00; B61H15/0007; B61H15/0014; B61H15/0021
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US533485A
Cited
US696523A
Cited
US704508A
Cited
US914024A
Cited
US1749018A
Cited
US1738395A
Cited
US2648408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-26 | 1959-12-26 | 1960-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-26 | 1963-12-26 | 1964-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-26 | 1967-12-26 | 1968-06-26 | $7700.00 | Window Closed / Lapsed |