Patents Assigned to Estad Products, Inc.
  • Panel locking means
    Patent number: 4435939
    Abstract: A supporting means for panel locking elements used generally for securing a pair of adjacent building sections or insulated panels together, including a housing member disposed within an insulated panel with means for supporting and positioning the housing means, which supporting means include portions which engage with relatively rigid sidewalls of the panel and are positively positioned or locked with respect thereto.
    Type: Grant
    Filed: August 15, 1980
    Date of Patent: March 13, 1984
    Assignee: Estad Products, Inc.
    Inventor: Richard E. Hird