David Knutson

3 Patents

• US120184932024

  Building Surface Product Including Attachment Clip, Building Surface System, and Method of Manufacture

  Certainteed Gypsum, Inc.

  0 cites
• US119057122024

  Wallboards, Wallboard Systems and Methods for Installing Them

  Certainteed Gypsum, Inc.

  0 cites
• US118518742023

  Interlocking Gypsum Building Surface Products, Methods of Manufacture, and Interlocking Gypsum Building Surface Systems

  Certainteed Gypsum, Inc.

  0 cites