Patent US3525244A successfully refreshed from Google Patents.
US3525244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for changing the rolls of a universal rolling mill
Assignee: Siegener Maschinenbau GmbH
•
Filing: 1968-01-11
•
Granted: 1970-08-25
•
Expires: 1988-01-11
Abstract
No abstract record available.
Inventors
- 👤 Heinrich Bohnenkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:36
CPC Classifications
B; B21; B21B; B21B31/00; B21B31/08; B21B31/10; B21B13/00; B21B13/08; B21B13/10; B21B2013/106; B21B2203/00; B21B2203/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |