Cardboard-based structure
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United States of America Patent
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May 23, 2017
Grant Date -
Dec 31, 2015
app pub date -
Oct 13, 2013
filing date -
Mar 15, 2013
priority date (Note) -
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Abstract
The invention provides cardboard-based structures comprising two or more, generally elongated elements angled with respect to one another and being cut out of a multi-layered cardboard-based piece that comprises at least two layers of a single cardboard sheet folded about a longitudinal reinforcing member. The invention further provides frames, preferably human-powered vehicle frames, constructed from structures of the invention, as well as methods for producing structures of the invention.
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