Patents by Inventor Mark Jerstad

Mark Jerstad has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for leveling spreadable material
    Publication number: 20050265786
    Abstract: The present method and structure provides a device for leveling a spreadable material on a surface. The device includes an elongate screed having opposing positions connected to a first connecting member and a second connecting member on the opposing positions forming an assembly. The assembly is at least partially supported by a first skid and a second skid where the first and the second skids provide an offset of the screed from the surface.
    Type: Application
    Filed: January 4, 2005
    Publication date: December 1, 2005
    Inventors: Mike Gresser, Mark Jerstad
  • Scaffold conveyor system
    Patent number: 6170608
    Abstract: A scaffolding system that includes a pair of tower portions, with each tower portion having a proximal section that is held in working relation with a bearing surface and each tower portion having a distal section, a platform, the platform supported by the distal section of each tower portion and the platform selectively movable both toward and away from the bearing surface, and a conveyor, the conveyor positioned on the platform between the pair of tower portions.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: January 9, 2001
    Assignee: Gressco of Collier County, Inc.
    Inventors: Michael J. Gresser, Mark Jerstad, Keith E. Stieg