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Erik S. Hopperstad

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  • Moorhead, MN, US
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    Folding Exercise Rack System
    • Publication number 20250010120
    • Publication date Jan 9, 2025
    • PRX Performance, LLC
    • Garrett A. Iverson
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Application

    Folding Exercise Rack System
    • Publication number 20240009504
    • Publication date Jan 11, 2024
    • PRX Performance, LLC
    • Garrett A. Iverson
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Application

    Folding Exercise Rack System
    • Publication number 20230140452
    • Publication date May 4, 2023
    • PRX Performance, LLC
    • Garrett A. Iverson
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Application

    Retractable Exercise Rack System
    • Publication number 20230045795
    • Publication date Feb 16, 2023
    • PRX Performance, LLC
    • Erik S. Hopperstad
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Application

    Wall Mounted Exercise Rack System
    • Publication number 20180290003
    • Publication date Oct 11, 2018
    • PRX Performance, LLC
    • Erik S. Hopperstad
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Application

    Wall Mounted Exercise Rack System
    • Publication number 20180104522
    • Publication date Apr 19, 2018
    • PRX Performance, LLC
    • Erik S. Hopperstad
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Application

    Wall Mounted Exercise Rack System
    • Publication number 20170246490
    • Publication date Aug 31, 2017
    • PRX Performance, LLC
    • Erik S. Hopperstad
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Application

    Retractable Wall Mounted Exercise Rack System
    • Publication number 20170065844
    • Publication date Mar 9, 2017
    • PRX Performance, LLC
    • Erik S. Hopperstad
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Application

    Barbell Collar System
    • Publication number 20160375295
    • Publication date Dec 29, 2016
    • PRX Performance, LLC
    • Brian B. Brasch
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Application

    Retractable Wall Mounted Exercise Rack System
    • Publication number 20160339291
    • Publication date Nov 24, 2016
    • PRX Performance, LLC
    • Erik S. Hopperstad
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Application

    Retractable Wall Mounted Exercise Rack System
    • Publication number 20160250515
    • Publication date Sep 1, 2016
    • PRX Performance, Inc.
    • Erik S. Hopperstad
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Application

    Retractable Wall Mounted Exercise Rack System
    • Publication number 20150290488
    • Publication date Oct 15, 2015
    • PRX Performance, Inc.
    • Erik S. Hopperstad
    • A63 - SPORTS GAMES AMUSEMENTS