French patent no. 1.006.382, 1948/1952. Front sickle bar mower for Bungartz U1.

Patent nr. 1 009 415, 1948/1951, inventor Kurt Frische. Quick action coupling for driven attachments, used in various dimensions on all Bungartz walk behind tractors and T5, T7 from 1950.

Patent nr. 940 023, 1953/1956, inventor Kurt Frische. Gearbox for Bungartz FRNK, high and low gear and yet very compact for narrow track walk behind tractors.

Patent nr. 1 001 034, 1953/1957, inventor Kurt Frische. Flexible coupling to enable use of rotary cultivators behind Bungartz T5, T7 four wheel tractors.

Patent nr. 1 009 415, 1955/1957, inventor Kurt Frische. Connection of rotary cultivator behind Bungartz T5, T7 tractors, to enable tilling under tree branches.

Patent nr. 818587, 1948/1951, inventor Kurt Frische. Steering of large walk behind tractors, by means of two differentials. Not used in Bungartz tractors as far as I know.

Patent nr. 819742, 1948/1951, inventor Kurt Frische. Device to adjust track width, used on Bungartz L5, T5, T7 tractors.

Patent nr. 855336, 1950/1952, inventor Kurt Frische. Device to convert a one wheeled tiller into a scooter.