Subclass Subgroup Patent
F04B 11/005 09810205
  17/05 09810206
  19/006 09810207
  37/085 09810208
  39/1066 09810209
  43/12 09810210
    09810211
  49/065 09810212
    09810213
    09810214
F04C 2/14 09810215
  14/223 09810216
  14/226 09810217
  28/28 09810218
  29/047 09810219
F04D 1/00 09810220
  13/02 09810221
  13/022 09810222
  13/06 09810223
    09810224
  17/10 09810225
  19/00 09810226
  25/088 09810227
  27/002 09810228
  27/0223 09810229
  29/023 09810230
  29/056 09810231
  29/086 09810232
  29/12 09810233
  29/283 09810234
  29/289 09810235
  29/382 09810236
  29/403 09810237
  29/4226 09810238
  29/4253 09810239
  29/426 09810240
  29/605 09810241