Articulated two-section snow board
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https://www.google.com/patents/US5865446?pg=PA12&dq=snowboard+carving&hl=de&sa=X&ei=yoYDU96aMsjZtAbzsYCAAQ&ved=0CJ0DEOgBMC44rAI
Dupill
1996
US5865446 A
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Snow gliding board
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Straight lines connect the edges, arranged perpendicular to a longitudinal axis (4) and skewed to each other, where the board comprises a torsion along the longitudinal axis in a front region (21), and maximum angle between the lines lie in a range of 8 and 20 degrees
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Zimon Jaket
2009
EP2248560 A1
https://www.google.com/patents/EP2248560A1?cl=en&dq=snowboard+carving&hl=de&sa=X&ei=yoYDU96aMsjZtAbzsYCAAQ&ved=0CM8EEOgBMEQ4rAI
Zai AG
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Short-radius ski associated with a long tip
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The invention relates to a short-radius ski associated with a long tip. Said ski (1) belongs to the family of skis known as freeride skis, comprising a tip, the extended length of which represents at least 11.5 percent of the total extended length of the ski. Said tip has a vertical radius (L6) of at least 300 mm. The horizontal radius of the ski between points (A), (B), and (C) is less than 18 meters, and the minimum width (L2) of the ski (3) exceeds 69 millimeters.
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http://patentscope.wipo.int/search/en/WO2003072207
Radiguet
2002
WO2003072207 A2
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Method of evaluating snow and board sport equipment
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A real cool patent !
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US 20120070123 A1
https://www.google.com/patents/US20120070123?pg=PA5&dq=snowboard+carving&hl=de&sa=X&ei=yoYDU96aMsjZtAbzsYCAAQ&ved=0CKYGEOgBMF84rAI
Hollis
2010
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Snowboard with improved tip and lifted tail
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EP 1410826 B1
https://www.google.com/patents/EP1410826B1?cl=en&dq=snowboard+carving&hl=de&sa=X&ei=yoYDU96aMsjZtAbzsYCAAQ&ved=0CL0GEOgBMGI4rAI
Rossignol
2002
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System for gliding on snow with improved mobility
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Dual Boards , Dual Snowpads
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Marlow Dynamicx
2013
https://www.google.com/patents/US20140021689?dq=inassignee:%22Marlow+Dynamics,+Llc%22&hl=en&sa=X&ei=xpQDU5yvMsbiywOuzoDADA&ved=0CDYQ6wEwAA
US20140021689 A1
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Gliding board for snow
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..wherein, at least on of the ends of the gliding board, at least one lower reinforcement and/or the at least one upper reinforcement respectively include/each include a longitudinal slit so that in a zone of at least one of the ends there is a reduced reinforcement thickness above and/or below the intermediate structure.
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US7887079 B2
Salomon
2006
https://www.google.com/patents/US7887079?dq=snowboard+carving&hl=de&sa=X&ei=7YcDU_TvOKaGywOZ14GoAw&ved=0CJMEEOgBMD44kAM
works for skis
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Device for sliding on snow
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Oh nein… das hatten wir letzte Woche ausprobiert : Horror for Snowboards
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https://www.google.com/patents/US7111864?dq=snowboard+carving&hl=de&sa=X&ei=7YcDU_TvOKaGywOZ14GoAw&ved=0CMoGEOgBMGM4kAM
Kneissl
2005
US7111864 B2
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