Environmental control apparatus Trademarks Filed in March 31, 1960
RESEARCH COTTRELL
Filed: March 31, 1960
Apparatus for Treating Industrial Gases-Namely, Electrostatic Precipitators and Parts Thereof
Owned by: RESEARCH-COTTRELL, INC.
Serial Number: 72094097
RESEARCH COTTRELL
Filed: March 31, 1960
Apparatus for Treating Industrial Gases-Namely, Vortical Gas Cleaners, and Gas Washers
Owned by: RESEARCH-COTTRELL, INC.
Serial Number: 72094098
