US PATENT SUBCLASS 235 / 420
.~ Machine control


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}
420.~ Machine control


DEFINITION

Classification: 235/420

Machine control:

(under subclass 419) Subject matter including means to control or determine what mathematical operations are to be performed.

(1) Note. Included here are means to determine when to take a subtotal or total or when to switch from one operation to another, i.e., division to multiplication.

(2) Note. Control of operations other than mathematical, such as printing or punching or record feeding are not classified here but in subclasses in this class directed to those specific operations, or data comparing.