US3606784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panel straightening machine for thin gauge sheet metal
Assignee: WILHELMSBURGER MASCHINENFABRIK HINRICHS AND SOHN
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Filing: 1969-04-16
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Granted: 1971-09-21
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Expires: 1989-04-16
Abstract
Abstract A PANEL STRAIGHTENING MACHINE FOR THIN GAUGE SHEET METAL IS PROVIDED WHICH COMPRISES GROUPS OF UPPER STRAIGHTENING ROLLS MOUNTED IN TWO CHOCKS TILTABLE ABOUT A COMMON HINGE AT THE BOTTOM ENDS OF THEIR NEIGHBOURING SIDES, WHEREAS THE TOP OF EACH CHOCK IS HINGEABLY ATTACHED TO TWO AND PREFERABLY AT LEAST FOUR PRESS RODS PERMITTING THE CHOCKS TO BE ADJUSTED BY DEFLECTION ABOUT THEIR COMMON HINGE.
Inventors
- 👤 Walter Schluter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:58
CPC Classifications
B; B21; B21D; B21D1/00; 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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |