Patents by Inventor James P. Granger

James P. Granger 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).

  • Drywall T-square
    Patent number: 4956919
    Abstract: A first positioning rule is oriented for mounting overlying edge portions of associated plaster drywall sheets. A second rule slidably mounted to the first rule includes a series of slots for receiving a cutting tool therewithin to effect scoring and cutting of the associated drywall sheet. The slots include overlying plate members of metallic construction received within recesses of the drywall rule to avoid damage to the rule in use of a cutting tool.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: September 18, 1990
    Inventor: James P. Granger