Patents by Inventor David Berggren

David Berggren 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).

  • Stanchion
    Patent number: 3977654
    Abstract: A stanchion construction for boats having a thin walled stainless steel tube which is reinforced throughout the lower portion by a solid plastic cylinder. Horizontal forces exerted on the stanchion directly or through a lifeline, create very substantial stresses in the lower portion of the stanchion. The plastic cylinder surrounded tightly by the tube wall creates a very sturdy construction which is compact and light in weight.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: August 31, 1976
    Assignee: Marine Fashion Inc.
    Inventors: Geoffrey Etherington, David Berggren