Exposed Wire Spring Patents (Class D21/693)
  • Upper torso muscle developer
    Patent number: D456471
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: April 30, 2002
    Inventor: Alan M. Rankin
  • Upper torso muscle developer
    Patent number: D458322
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: June 4, 2002
    Inventor: Alan M. Rankin
  • Jaw exercising device
    Patent number: D585948
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: February 3, 2009
    Inventor: Aaron Charles LoBue
  • Hand-held exerciser
    Patent number: D420072
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: February 1, 2000
    Inventor: Jacob R. Hershey
  • Upper body exercise spring
    Patent number: D757870
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: May 31, 2016
    Inventor: John M. Leslie
  • Exercise spring with loops
    Patent number: D797218
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: September 12, 2017
    Inventor: Ilaria Cavagna
  • Apparatus for developing muscles
    Patent number: D879219
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: March 24, 2020
    Assignee: Shenzhen Putai Ecommerce Co., Ltd.
    Inventor: Junchao Chen
  • Equipment for strengthening muscles
    Patent number: D886217
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: June 2, 2020
    Assignee: SHENZHEN PUTAI ECOMMERCE CO., LTD.
    Inventor: Junchao Chen
  • Exercise tension bar
    Patent number: D948644
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: April 12, 2022
    Assignee: T.K. Chin Company Ltd.
    Inventor: Howard Chin
  • Exercise tension bar
    Patent number: D948645
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: April 12, 2022
    Assignee: T.K. Chin Company Ltd.
    Inventor: Howard Chin
  • Exercise device
    Patent number: D956892
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: July 5, 2022
    Inventors: Charlyn Huss d'Anconia, Joel Raymond Fernandez