Patent US2685216A successfully refreshed from Google Patents.
US2685216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective device for tube mills
Assignee: United States Steel Corp
•
Filing: 1950-12-15
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Granted: 1954-08-03
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Expires: 1970-12-15
Abstract
No abstract record available.
Inventors
- 👤 Bannister Bryant
- 👤 Robert L Livingston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:07
CPC Classifications
F; F16; F16P; F16P7/00; F16P7/02; B; B21; B21B; B21B33/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE317885C
Cited
US748107A
Cited
US1778655A
Cited
US1951426A
Cited
DE702032C
Cited
US2261631A
Cited
US2579922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |