US2648424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tensioning device for conveyer belts
Assignee: United States Steel Corp
•
Filing: 1950-03-15
•
Granted: 1953-08-11
•
Expires: 1970-03-15
Abstract
No abstract record available.
Inventors
- 👤 Robert N Bateman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:26
CPC Classifications
B; B65; B65G; B65G23/00; B65G23/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US592111A
Cited
US1422252A
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US1663344A
Cited
US1770934A
Cited
DE672954C
Cited
GB587114A
Cited
US2452980A
Cited
US2463273A
Cited
US2628707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |