US PATENT SUBCLASS 235 / 423
.~ Subtraction

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

Internet Version by PATENTEC © 1999      Terms of Use


235 /   HD   REGISTERS

419  DF  RECORD CONTROLLED CALCULATORS {14}
423.~ Subtraction

DEFINITION

Classification: 235/423

Subtraction:

(under subclass 419) Subject matter wherein the mathematical operation performed is that of subtraction.