JOINT BETWEEN SHEETS OF MATERIAL
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United States of America Patent
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Issued Date -
Aug 29, 2013
app pub date -
Feb 29, 2012
filing date -
Feb 29, 2012
priority date (Note) -
Abandoned
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Abstract
Two sheets of material are positioned in overlying and parallel relationship with one another. Each of the sheets has a plurality of perforations with a tang extending from each perforation and the tangs of one sheet cooperate with the tangs of the other sheet to interconnect the sheets. At least one of the tangs on one of the sheets is a wide tang having a first width, and at least one of the tangs on the other of the sheets is a narrow tang having a second width which is less than the first width.
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