Patent US3605470A successfully refreshed from Google Patents.
US3605470A
Expired / Lapsed
US
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Pressure assisted tension roller leveler
Assignee: Individual
•
Filing: 1969-10-03
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Granted: 1971-09-20
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Expires: 1989-10-03
Abstract
Abstract A PRESSURE ASSISTED TENSION ROLLER LEVELER EMBODYING MEANS FOR APPLYING PRESSURE NORMAL TO THE STIP DURING PASSAGE BETWEEN THE WORK ROLL AND THE FLEXURE ROLLS AND FOR PROVIDING FLEXIBILITY CROSSWISE BETWEEN THE WORK ROLL AND FLEXURE ROLLS.
Inventors
- 👤 Natalis H Polakowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:13
CPC Classifications
B; B21; B21D; B21D1/00; B21D1/05; B21D1/02
Claims Analysis
Total Claims: 0
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |