Patents Assigned to Ingenjorsfirman Besam Aktiebolag
  • Hydraulic door openers
    Patent number: 3948000
    Abstract: A hydraulic door opener comprising a closed hydraulic circuit including a motor for actuating a door operating spring surrounded by a housing which forms a component part of the hydraulic circuit and serves as a reservoir for the hydraulic liquid.
    Type: Grant
    Filed: July 25, 1974
    Date of Patent: April 6, 1976
    Assignee: Ingenjorsfirman Besam Aktiebolag
    Inventor: Pauli Dennis Pedersen