Metal gasket and mis-assembly detection method of metal gasket
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United States of America Patent
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Mar 29, 2011
Grant Date -
Jul 10, 2008
app pub date -
Jan 4, 2008
filing date -
Jan 5, 2007
priority date (Note) -
Expired
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Abstract
A metal gasket includes at least three metal plates including first, second and third metal plates laminated in this order from a top to form the metal gasket. Identification marks are provided on at least second and third metal plates in a position not to overlap with one another, and penetration windows are formed in at least the first and second metal plates. The penetration windows are arranged to see the identification mark therethrough located lower than the metal plate where the penetration window is formed.
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