Research Development Systems, Inc. Trademarks
DURALINE
Filed: January 2, 1979
Musical Instrument Components-Namely, Drum Heads and Sticks
Owned by: Research Development Systems, Inc.
Serial Number: 73198647
BREATHE EASY
Filed: October 16, 1990
air purification equipment
Owned by: Research Development Systems, Inc.
Serial Number: 74106394
MISCELLANEOUS DESIGN
Filed: August 28, 1991
air purification units for domestic use
Owned by: Research Development Systems, Inc.
Serial Number: 74198774
SMOG BUSTER
Filed: August 28, 1991
air filtration units for domestic use
Owned by: Research Development Systems, Inc.
Serial Number: 74198775
