US2675894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slack adjuster for railway car foundation brakes
Assignee: Individual
•
Filing: 1949-11-15
•
Granted: 1954-04-20
•
Expires: 1969-11-15
Abstract
No abstract record available.
Inventors
- 👤 Charles M O'boyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:15
CPC Classifications
B; B61; B61H; B61H15/00; B61H15/0007; B61H15/0014; B61H15/0021; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20468
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US407942A
Cited
US987272A
Cited
US1203840A
Cited
US1623108A
Cited
US1612781A
Cited
US1680515A
Cited
US1681057A
Cited
US1947405A
Cited
US1947403A
Cited
US2181700A
Cited
US2190681A
Cited
GB582514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |