Structural element comprising cardboard
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United States of America Patent
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Oct 11, 2016
Grant Date -
Aug 20, 2015
app pub date -
Feb 26, 2015
filing date -
Oct 18, 2012
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Abstract
The invention provides structural elements comprising an elongated internal member and an elongated external member enclosing said internal member, in which a mid-portion enveloping the internal member and being in tight association with the external surface of the internal member, defines, jointly with said internal member, a first, core-envelope sub-structure, while two flanking portions extending from and integral with the mid-portion and facing and contacting one another to jointly define a second, layered sub-structure. The invention further provides methods for manufacturing such structural elements.
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