Manufacturer: Sonograph, Ltd. (Sonograph Ltd.)
Model: Tape_Riter C2
Type: tape
Place of origin: Canada
Date of manufacture: 1951
Comments: Design developed around 1949 by an Edmonton, Canada inventor. Manufactured and marketed in 1950 by Ritchie Recorders in Montreal. Company reorganized in 1951 as Sonograph Ltd. Machine was sold in Euro
