US2841292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High capacity draft gear with friction and rubber spring cushioning elements
Assignee: Cardwell Westinghouse Co
•
Filing: 1953-10-28
•
Granted: 1958-07-01
•
Expires: 1973-10-28
Abstract
No abstract record available.
Inventors
- 👤 David S Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:36
CPC Classifications
B; B61; B61G; B61G9/00; B61G9/04; B61G9/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1585708A
Cited
US1650381A
Cited
US1874531A
Cited
US1831084A
Cited
US1947812A
Cited
US2165375A
Cited
US2501889A
Cited
US2510278A
Cited
US2555399A
Cited
US2667277A
Cited
US2588488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |