Patents Assigned to FREIBORG ENTERPRISES, INC.
  • Patent number: 11473304
    Abstract: A laminated composition shingle includes a first sheet having a first mineral granule surface and a first rectangular shape without tab cut-outs laminated with a second sheet having a second mineral granule surface. The second sheet has tab cut-outs along only one longer edge of the second sheet. The laminated composition shingle has a shingle width and an exposure width perpendicular to the long edges and a first width that is twice the exposure width. The shingle width is the first width plus 2 inches (51 mm). The tab cut-outs have a tab width in the direction of the shingle width less than the exposure width minus ? of an inch (3 mm).
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: October 18, 2022
    Assignee: Freiborg Enterprises, Inc.
    Inventor: Mark Freiborg
  • Patent number: D869691
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: December 10, 2019
    Assignee: FREIBORG ENTERPRISES, INC.
    Inventor: Mark Freiborg
  • Patent number: D870320
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: December 17, 2019
    Assignee: FREIBORG ENTERPRISES, INC.
    Inventor: Mark Freiborg
  • Patent number: D870321
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: December 17, 2019
    Assignee: FREIBORG ENTERPRISES, INC.
    Inventor: Mark Freiborg