world wide patent for the first Laboratory Planetary Mill. In 1996 FRITSCH also patented the first ever Planetary Mill with only one working station (Mono Mill). ... Working principle of Planetary Ball Mills PULVERISETTE 6 M o v e m e n t o f t h e s u p p o r ti n g d i s k Rotation of the grinding bowl. Planetary Mill PULVERISETTE 5 classic ...