Patents by Inventor Darrell N. Welch

Darrell N. Welch 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).

  • Buoy
    Patent number: D248840
    Type: Grant
    Filed: June 11, 1976
    Date of Patent: August 8, 1978
    Assignees: Harold W. Aesch, Sr., Harold W. Aesch, Jr., Darrell N. Welch, Asis K. Saha, John B. Pollet
    Inventors: Harold W. Aesch, Sr., Harold W. Aesch, Jr., Darrell N. Welch