DIFF Subgroup
A47L 9/20 Means for cleaning filters
Introduced: September 1968
Full Title
Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners > Means for cleaning filters
No child classifications to compare. This is a leaf node in both IPC and CPC.