Toshihisa Mitsuhashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A hat which is manufactured of material such as synthetic resin and the like and formed into a box-shaped, generally square pyramidal main body as a whole comprises integrally-provided foldable chocking pieces formed by cutting a plurality of evenly spaced slits on a rim around a locking hole disposed in a center of a base.
Abstract: A hat which is manufactured of material such as synthetic resin and the like and formed into a box-shaped, generally square pyramidal main body as a whole comprises integrally-provided foldable chocking pieces formed by cutting a plurality of evenly spaced slits on a rim around a locking hole disposed in a center of a base.
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