US2787367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belt conveyor
Assignee: United States Steel Corp
•
Filing: 1953-06-29
•
Granted: 1957-04-02
•
Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 Been Walfrid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:08
CPC Classifications
B; B65; B65G; B65G45/00; B65G45/10; B65G45/12; B65G45/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1478784A
Cited
US2243538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |