Patent US3621694A successfully refreshed from Google Patents.
US3621694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling mill
Assignee: United Engineering and Foundry Co
•
Filing: 1970-04-20
•
Granted: 1971-11-23
•
Expires: 1990-04-20
Abstract
Abstract THIS INVENTION RELATES TI A ROOLING MILL AND, FOR THE PURPOSE OF DESCRIPTION, TO A VERTICAL MILL OF THE TYPE EMPLOYED AS AN INTEGRAL PART OF A CONTINUOUS CASTING PLANT.
Inventors
- 👤 Joseph Irwin Greenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:13
CPC Classifications
B; B21; B21B; B21B35/00; B21B35/12; B21B13/00; B21B13/06; B21B13/22; B21B2203/00; B21B2203/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |