Spring Or Compression Type (e.g., "push-pull" Type) Patents (Class D21/692)
Exposed wire spring (Class D21/693)
  • Pool exercise device
    Patent number: D405133
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: February 2, 1999
    Assignee: Aquatic Trends, Inc.
    Inventor: Todd Morgan
  • Exercise apparatus
    Patent number: D408063
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: April 13, 1999
    Inventors: Martin A. Van Der Hoeven, Jaeson Cayne, Thomas J. Ryan
  • Combined ring and spring apparatus
    Patent number: D409816
    Type: Grant
    Filed: May 21, 1991
    Date of Patent: May 11, 1999
    Inventor: Arnold A. Young