Patents by Inventor Otmax Suprapto

Otmax Suprapto 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).

  • Patent number: 4173875
    Abstract: A washing machine comprising a housing, an outer tub disposed in the housing, an inner tub disposed within the outer tub, an agitator disposed centrally of the inner tub and fixed to a vertical drive shaft, the inner tub having perforations in wall portions thereof, a first drain line extending from a bottom portion of the outer tub, an annular chamber disposed proximate an upper portion of the outer tub and positioned between the outer tub and a wall portion of the housing, the chamber having holes therein placing the chamber in communication with upper regions of the outer tub, and a second drain line extending from the annular chamber and connected to the first drain line.
    Type: Grant
    Filed: June 30, 1978
    Date of Patent: November 13, 1979
    Inventor: Otmax Suprapto