STELMA INCORPORATED Trademarks
PORTACOM
Filed: February 25, 1969
PORTABLE DATA TERMINALS AND MODEMS
Owned by: STELMA INCORPORATED
Serial Number: 72320097
DATA PAK
Filed: July 13, 1970
FREQUENCY DIVISION MULTIPLEXERS USED TO TRANSMIT AND RECEIVE DATA AND TELEGRAPH SIGNALS OVER TELEPHONE LINES
Owned by: STELMA INCORPORATED
Serial Number: 72365174
