Patents by Inventor James R. Hubbard

James R. Hubbard 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).

  • Instrument pen with integral pen arm attachment means
    Patent number: 3983569
    Abstract: A pen for use in recording instruments includes integral hinged member which folds over and locks in place on a pen arm and thus facilitates attachment of pen and pen arm. Preferably, integrally molded ribs are included to press into and to better secure the pen arm upon locking engagement of the hinged member.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: September 28, 1976
    Assignee: Graphic Controls Corporation
    Inventors: James R. Hubbard, Charles A. Erdman