(under subclass 364) Means for rotating sifters limited to the sifting art by inclusion of the sifter in the combination or by some special adaptation that limits it to said art.
(1) Note. The appropriate subclasses which include rotating sifters should be searched.
SEE OR SEARCH CLASS
74, Machine Element or Mechanism, appropriate subclasses, for the machine element or mechanical movement, per se.
366, Agitating,
219+, for agitating devices including a rotatable mixing chamber.
