Patents by Inventor Malcolm Mackie

Malcolm Mackie 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).

  • Utility knife attachment
    Patent number: 4255856
    Abstract: An attachment for a utility knife is disclosed which allows the knife to be used in association with a measuring tape for cutting sheets of plasterboard and the like into uniform widths. In one embodiment, the attachment is in the form of a relatively thin metal plate which is fitted into the handle of the knife alongside the blade and which has a projecting flange at its outer end formed with a slot for receiving a measuring tape.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: March 17, 1981
    Inventor: Malcolm Mackie