Patents Assigned to K.K. Chiyoda Gurabiya Insatsusha
  • Key top
    Patent number: 4042090
    Abstract: A key top comprises a key top base comprising a side portion and a top portion having a specified color, a colored portion provided at a part of the top portion and having a color different from the specified color of the top portion, and, a protective layer composed of a transparent material having an abrasion resistance and covering at least the colored portion.
    Type: Grant
    Filed: September 17, 1974
    Date of Patent: August 16, 1977
    Assignees: Canon Kabushiki Kaisha, K.K. Chiyoda Gurabiya Insatsusha
    Inventors: Sadao Hasebe, Hiromitsu Ono, Minoru Murata, Yuji Harada