Patents Assigned to Cardinal Industries, Inc.
  • Thermally insulated, fire resistant attic door
    Patent number: 4299059
    Abstract: A ceiling-mounted attic door features a continuous outer panel of flame-resistant plaster board, an intermediate layer of thermal insulating material and marginal sealing gaskets and insulating strips arranged to thermally seal the marginal edges of the door when it occupies a normally closed position within its associated door opening.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: November 10, 1981
    Assignee: Cardinal Industries, Inc.
    Inventor: William V. Smith
  • Building
    Patent number: D255156
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: May 27, 1980
    Assignee: Cardinal Industries, Inc.
    Inventor: Monica P. Subtirelu
  • Residential building
    Patent number: D255157
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: May 27, 1980
    Assignee: Cardinal Industries, Inc.
    Inventor: Monica P. Subtirelu