Patents by Inventor Donald B. McCallum

Donald B. McCallum 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).

  • Hangable holder for stationery materials
    Patent number: 3980360
    Abstract: A novel one-piece holder is provided for binding a multi-leaf computer printout and mounting the same in a suspension-filing and/or storing system.
    Type: Grant
    Filed: April 11, 1975
    Date of Patent: September 14, 1976
    Assignee: Barry Wright Corporation
    Inventors: David M. Wright, Donald B. McCallum
  • Storage system
    Patent number: 3980363
    Abstract: System for storing computer printouts or the like which includes a cabinet or shell supporting a plurality of trays which may be removed from the cabinet or be partially pulled out of the cabinet to view a printout supported by the tray. Provision is provided in the preferred embodiment for binding the computer printout to the tray supporting the printout.
    Type: Grant
    Filed: January 31, 1975
    Date of Patent: September 14, 1976
    Assignee: Barry Wright Corporation
    Inventors: Carl J. Dean, Donald B. McCallum, Norman C. May, Sr.
  • Shelf support and electrical cable management structure
    Patent number: D363701
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: October 31, 1995
    Assignee: Wright Line, Inc.
    Inventors: Edmund T. Paquette, Donald B. McCallum