Patents Assigned to AB R & D Marine OY
  • Controllable-pitch propeller
    Patent number: 6425788
    Abstract: The invention relates to a propeller suited for installation in boats and vessels and having a run-time controllable pitch of propeller blades (4).
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: July 30, 2002
    Assignee: AB R & D Marine OY
    Inventor: Jan-Erik Lindholm