US PATENT SUBCLASS 73 / 12.03
.~ Typewriting ribbon or carbon paper


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

Internet Version by PATENTEC © 1999      Terms of Use



73 /   HD   MEASURING AND TESTING

12.01  DF  TESTING BY IMPACT OR SHOCK {5}
12.03.~ Typewriting ribbon or carbon paper


DEFINITION

Classification: 73/12.03

Typewriting ribbon or carbon paper:

(under subclass 12.01) Subject matter wherein the specimen being tested is either a typewriter ribbon or carbon paper.

(1) Note. Carbon paper is used in the popular sense of the word to mean that type of paper which transfers a surface coating when pressed against a surface, as by a typewriter key.

SEE OR SEARCH THIS CLASS, SUBCLASS:

150, for testing of a coating, per se.

159, for a filament testing, per se.