US PATENT SUBCLASS 416 / 129
.~.~.~ Engine driven

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


416 /   HD   FLUID REACTION SURFACES (I.E., IMPELLERS)

120  DF  PLURAL IMPELLERS HAVING RELATIVE MOVEMENT OR INDEPENDENT SUPPORTS {5}
124  DF  .~ Coaxial rotation {4}
128  DF  .~.~ Oppositely rotating impellers {1}
129.~.~.~ Engine driven

DEFINITION

Classification: 416/129

(under subclass 128) Apparatus comprising a source of mechanical power rotating the plural impellers.