Method and apparatus for stamping a metal sheet with an apertured design having rolled edges
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United States of America Patent
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-
May 22, 2001
Grant Date -
N/A
app pub date -
Oct 13, 2000
filing date -
Oct 13, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A metal container lid having an apertured design with rolled edges is stamped by a method and apparatus incorporating a cushioning pad between a die and the metal sheet, which is then stamped with a perforating punch.
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