Patents by Inventor Shioya Tutomu

Shioya Tutomu 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).

  • Drawing apparatus
    Patent number: 4241512
    Abstract: A drawing apparatus provided with calculative function of a calculation portion. A universal parallel ruler in which operating keys and a calculation result display portion for operating the calculative function are disposed on the surface of a member, the base of which is connected with an operating grip of a head portion to project sideways of the member, the head portion being disposed to be moved and set to any position on a drawing board by guide rail members or jointed arm members and supporting a vertical scale and a horizontal scale to be set to any angle.
    Type: Grant
    Filed: April 12, 1979
    Date of Patent: December 30, 1980
    Assignee: Max Co. Ltd.
    Inventors: Kimijima Chikanobu, Kosakai Asao, Shioya Tutomu, Tatsumi Tomotaka