Patents by Inventor Jens H. Madsen

Jens H. Madsen 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).

  • Sheet piling
    Patent number: D256620
    Type: Grant
    Filed: September 27, 1978
    Date of Patent: August 26, 1980
    Assignee: Armco Inc.
    Inventor: Jens H. Madsen
  • Sheet piling
    Patent number: D256731
    Type: Grant
    Filed: September 27, 1978
    Date of Patent: September 2, 1980
    Assignee: Armco Inc
    Inventor: Jens H. Madsen
  • Sheet piling
    Patent number: D256843
    Type: Grant
    Filed: September 27, 1978
    Date of Patent: September 9, 1980
    Assignee: Armco Inc.
    Inventor: Jens H. Madsen