Patents Assigned to Life Environment Research Laboratories
  • Circular sporting article
    Patent number: 4690401
    Abstract: A circular sporting article comprising a core material in a ring shape made of a long and narrow strip of spring steel and a flexible covering material to cover said circular core material and having an overall diameter approximately corresponding to the shoulder length of a user and a sectional diameter which can be easily grasped by a user, which can be used by adults or children for improving their arm or leg strength or grasping power.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: September 1, 1987
    Assignee: Life Environment Research Laboratories
    Inventor: Shoji Cho