US1749018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slack adjuster
Assignee: New York Air Brake LLC
•
Filing: 1925-07-17
•
Granted: 1930-03-04
•
Expires: 1945-07-17
Abstract
No abstract record available.
Inventors
- 👤 Campbell Charles Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:13
CPC Classifications
B; B61; B61H; B61H15/00; B61H15/0007; B61H15/0014; B61H15/0021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1933-03-03 | 1933-09-02 | 1934-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-03-03 | 1937-09-02 | 1938-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-03-03 | 1941-09-02 | 1942-03-04 | $7700.00 | Window Closed / Lapsed |