US PATENT SUBCLASS 400 / 241.1
.~.~.~ Synthetic material

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

Internet Version by PATENTEC © 1999      Terms of Use


400 /   HD   TYPEWRITING MACHINES

191  DF  INCLUDING INTERPOSED INKING DEVICE (E.G., RIBBON) FOR RECORD-MEDIUM {15}
237  DF  .~ Ribbon, per se {4}
241  DF  .~.~ Particular ribbon material {3}
241.1.~.~.~ Synthetic material {1}
241.2  DF  .~.~.~.~> Wherein ink is entrapped in ribbon material (e.g., microcapsules, micropores, etc.)

DEFINITION

Classification: 400/241.1

Synthetic material:

(under subclass 241) Subject matter wherein the substance is a compound formed from chemical reaction involving elements, radical, or simpler compounds.

(1) Note. This subclass provides for disclosure of a ribbon* wherein the ink*-carrying substance of the ribbon is a "man-made" substance rather than a substance which occurs naturally.