US2586630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Booster apparatus for conveyer drives
Assignee: United States Steel Corp
•
Filing: 1949-03-21
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Granted: 1952-02-19
•
Expires: 1969-03-21
Abstract
No abstract record available.
Inventors
- 👤 Gustave G Erland
- 👤 Axel B Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:58
CPC Classifications
B; B65; B65G; B65G23/00; B65G23/38; B65G23/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1522116A
Cited
US1934835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |