Patents Assigned to Keefe-Dickson Corporation Inc.
  • Tactile tile
    Patent number: 5328293
    Abstract: A tactile tile having a flat plate with a plurality of raised areas, said plate and raised areas comprised of polyurethane.
    Type: Grant
    Filed: December 4, 1991
    Date of Patent: July 12, 1994
    Assignee: Keefe-Dickson Corporation Inc.
    Inventor: Robert F. Keefe