Patents by Inventor Mark S. Cox

Mark S. Cox 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).

  • Sounding banjo and head therefor
    Patent number: 4213368
    Abstract: An improved banjo head is described which provides a deeper and more mellow sound to the banjo. The new head also allows for sound pick up and amplification from each string. The new banjo head comprises a thin flexible membrane having a hole positioned on the periphery of this membrane and a means to reinforce said hole.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: July 22, 1980
    Inventor: Mark S. Cox