US PATENT SUBCLASS 172 / 732
.~.~ Triangular blade

Current as of: June, 1999
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172 /   HD   EARTH WORKING

681  DF  TOOL, STANDARD OR CONNECTION {32}
721  DF  .~ Non-rectangular, symmetrical type {8}
732.~.~ Triangular blade

DEFINITION

Classification: 172/732

(under subclass 721) Apparatus in which the earth working element has the appearance of an isosceles triangle when viewed in plan or front elevation.

(1) Note. The triangular blade may have an integral or separately attached shank to the upper portion for connection to a standard or frame.