US3013459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for roller conveyor
Assignee: United States Steel Corp
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Filing: 1959-03-12
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Granted: 1961-12-19
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Expires: 1979-03-12
Abstract
No abstract record available.
Inventors
- 👤 William E Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:54
CPC Classifications
B; B23; B23D; B23D47/00; B23D47/04; B23D47/042; B21; B21B; B21B37/00; B21B37/70; B23D33/00; B23D33/006; B23D33/10; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4458; Y10T83/446; Y10T83/525; Y10T83/533
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |