Patents Represented by Law Firm Parrish & Mulrooney
  • Patent number: 4438819
    Abstract: An improved land vehicle for constructing rice levees comprises a unitary, ground contacting roller-wheel assembly surrounded by a frame member. The shape and size of the roller permits the construction of rice levees having the desired shape and dimensions. The roller is hollow so that it may be filled with materials as desired to vary its weight and thereby adapt it for varying rice field conditions. Tires mounted on the roller-wheel assembly function to aid in levee construction and to allow the vehicle to be transported without the use of special equipment.
    Type: Grant
    Filed: May 21, 1982
    Date of Patent: March 27, 1984
    Inventor: Lloyd E. Ryals
  • Patent number: D272784
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: February 28, 1984
    Assignee: Omni R & D, Inc.
    Inventor: Robert E. Williams, Jr.