Someone patended swinging sideways on a childs' swing around 2003 to illustrate this point
newscientist.com/article/dn2178-boy-takes-swing-at-us-patents (it was invalidated a year later due to prior art - a patent filed in the 1990s)
Someone patended swinging sideways on a childs' swing around 2003 to illustrate this point
newscientist.com/article/dn2178-boy-takes-swing-at-us-patents (it was invalidated a year later due to prior art - a patent filed in the 1990s)