US PATENT SUBCLASS 416 / 233
.~.~ Having brace means bridging cavity

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

223 R  DF  SPECIFIC BLADE STRUCTURE (E.G., SHAPE, MATERIAL, ETC.) {18}
232  DF  .~ Hollow {1}
233.~.~ Having brace means bridging cavity

DEFINITION

Classification: 416/233

(under subclass 232) Apparatus wherein the shell encloses ribs or like reinforcing means extending between opposing walls of the cavity.

SEE OR SEARCH THIS CLASS, SUBCLASS:

226, for a hollow blade wherein the shell is fabricated about a main support.