72288674
Jan 12, 1968
Mar 4, 1969
INKING RIBBONS USED WITH BUSINESS MACHINES-NAMELY, [ ADDING MACHINES, ACCOUNTING MACHINES, CALCULATING MACHINES, CASH REGISTERS, ] PRINTERS, [ TYPEWRITERS, ] CHECK WRITERS [ AND SIGNERS ] AND THE LIKE [ ; CARBON PAPER; AND REPRODUCTIVE TRANSFER OR COPY PAPER CONTAINING AN INKING MATERIAL ]
Environmental Control Apparatus