US PATENT SUBCLASS 416 / 220 R
.~.~ Having blade locking means

Current as of: June, 1999
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416 /   HD   FLUID REACTION SURFACES (I.E., IMPELLERS)

204 R  DF  SPECIFIC WORKING MEMBER MOUNT {9}
219 R  DF  .~ Blade received in well or slot {2}
220 R.~.~ Having blade locking means {2}
221  DF  .~.~.~> Resilient or deformable
220 A  DF  .~.~.~> Non-turbo machine

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 416/220

(under subclass 219) Apparatus comprising a distinct fastening member for securing the blade to the mounting.