Three structure structural element with interlocking ribbing
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United States of America Patent
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Jan 30, 1996
Issued Date -
N/A
app pub date -
Dec 27, 1993
filing date -
Oct 3, 1991
priority date (Note) -
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Abstract
A structural element comprising opposed first and second, laterally and longitudinally extended, generally planar surface structures each having a closed figure pattern of ribbing projecting therefrom toward the opposite surface structure, a third structure disposed between the first and second surface structures in ribbing-engaging relation therewith, the opposed ribbing being interlocked across the third structure in registered, mating relation.
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