US PATENT SUBCLASS 708 / 837
.~.~.~ Quarter-square

Current as of: June, 1999
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708 /   HD   ELECTRICAL COMPUTERS: ARITHMETIC PROCESSING AND CALCULATING

800  DF  ELECTRICAL ANALOG CALCULATING COMPUTER {1}
801  DF  .~ Particular function performed {15}
835  DF  .~.~ Multiplication {7}
837.~.~.~ Quarter-square

DEFINITION

Classification: 708/837

Quarter-square:

(under subclass 835) Subject matter wherein the product produced pertains to an analog multiplier whose operation is based upon the identity xy = (1/4) (x+y) 2 - (1/4) (x-y) 2.