发明名称 Toothbrush
摘要 A toothbrush which comprises an elongated handle including a U-shaped head coaxial with a front end of the handle. The head is provided with two opposite bristles-carrying portions located to opposite sides of an axis of the head and each of the portions has a front edge which is inclined at an acute angle to the axis. The toothbrush further includes a plurality of bristle tufts which are spaced from each other inwardly from the bristle-carrying portions and are arranged in a first plurality of rows which is substantially parallel to the front edge and in a second plurality of rows parallel to the axis. The ends of the bristles in the second plurality of rows on the opposite bristles-carrying portions are arranged to define an acute gap therebetween.
申请公布号 US4131967(A) 申请公布日期 1979.01.02
申请号 US19760684184 申请日期 1976.07.01
申请人 NORTHEMANN, KARL-HEINZ;KRAHN, HEINRICH 发明人 NORTHEMANN, KARL-HEINZ;KRAHN, HEINRICH
分类号 A46B5/00;A46B9/04;A61C17/34;(IPC1-7):A46B9/04 主分类号 A46B5/00
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