CPC Main Group A01J 9/00 Milk receptacles 5 direct subcodes Child Classifications Navigate with arrow keys, Enter to open A01J 9/02 with straining or filtering devices A01J 9/04 with cooling arrangements A01J 9/06 with self-closing valve A01J 9/08 Holding or supporting devices for milking receptacles A01J 9/10 Milking pails connected with milking stools