Subclass Subgroup Patent
D01D 5/08 09809905
  11/06 09809906
D01F 1/07 09809907
  1/10 09809908
  9/322 09809909
D04B 21/16 09809910
D04H 1/005 09809911
D05B 69/32 09809912
D06C 7/00 09809913
D06F 29/005 09809914
  33/02 09809915
  35/007 09809916
  37/04 09809917
  37/20 09809918
  37/24 09809919
  39/008 09809920
  39/02 09809921
  39/028 09809922
  39/087 09809923
  71/026 09809924
D06M 11/54 09809925
  15/53 09809926
D21F 3/086 09809927
D21H 11/16 09809928
  17/53 09809929
  21/10 09809930
  21/20 09809931