US PATENT SUBCLASS 416 / 212 A
.~.~ Turbo machine

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}
212 R  DF  .~ Interlocking blades {1}
212 A.~.~ Turbo machine

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 416/212

(under subclass 204) Apparatus wherein the impeller comprises a plurality of blades, any one blade provided with means interfitting or common to an adjacent blade to produce rigidity in one or more directions.