Patents Assigned to Robert J. Pearson
  • Doorbar system
    Patent number: 3980328
    Abstract: Improvement in a doorbar device for barring the door of a doorway, the doorway having doorjambs and a door therefor, the door having a doorknob, the doorbar device comprising a doorknob constructed to be affixed to the doorjambs of the doorway to extend across and bar the door from being opened, the doorbar device also comprising a mechanism for applying a force upon the doorknob to prevent turning thereof.
    Type: Grant
    Filed: May 21, 1975
    Date of Patent: September 14, 1976
    Assignee: Robert J. Pearson
    Inventor: Ernest A. Pearson