Patents by Inventor Karl W. Struck

Karl W. Struck 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).

  • Current transformer
    Patent number: D288314
    Type: Grant
    Filed: March 30, 1984
    Date of Patent: February 17, 1987
    Assignee: Sangamo Weston, Inc.
    Inventors: David N. Makinson, Karl W. Struck
  • Voltage transformer
    Patent number: D289033
    Type: Grant
    Filed: March 30, 1984
    Date of Patent: March 31, 1987
    Assignee: Sangamo Weston, Inc.
    Inventors: David N. Makinson, Karl W. Struck
  • Current transformer
    Patent number: D293431
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: December 29, 1987
    Assignee: Sangamo Weston, Inc.
    Inventors: David N. Makinson, Karl W. Struck
  • Voltage transformer
    Patent number: D294565
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: March 8, 1988
    Assignee: Sangamo Weston, Inc.
    Inventors: David N. Makinson, Karl W. Struck