Lindequist
 
Designed after patents by the swedish engineer Lindequist. It was a 12-cylinders high altitude engine. Weight ca 1000 kg, developed 700 hp at 1525 rpm and 1,2 bar boost pressure.
Two parallel cylinderrows . Each piston is connected by the piston rod to a double acting compressor crosshead piston. Trials made 1933. Project cancelled 1935