Patents by Inventor David A. Silva

David A. Silva 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).

  • Haircutting guide-comb
    Patent number: 6267119
    Abstract: A haircutting guide-comb instrument for use in cutting head hair of a human being and including a pair of elongated legs superimposed over one another to clasp hair of the human being in between said legs with a bias spring engaged about the terminal ends of the legs to urge them in engagement with one another and an anchor at the terminal ends securing the bias springs to both of the elongated legs.
    Type: Grant
    Filed: May 22, 1996
    Date of Patent: July 31, 2001
    Inventor: David A. Silva
  • Hair band
    Patent number: D501953
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: February 15, 2005
    Inventor: David A. Silva