Patents by Inventor Francis S. Coyle

Francis S. Coyle 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).

  • Pencil holder
    Patent number: 4310109
    Abstract: A pencil holder having a main body which is adapted to fit within a shirt pocket is disclosed. A multi-biased spring releasably fastens the pencil holder to the shirt pocket and simultaneously retains pens or pencils placed within the pencil holder.
    Type: Grant
    Filed: February 2, 1981
    Date of Patent: January 12, 1982
    Inventor: Francis S. Coyle