Environmental control apparatus Trademarks Filed in October 11, 1955
DUOMATIC
Filed: October 11, 1955
WATER TREATMENT AND WATER SOFTENING EQUIPMENT OF THE ION-EX-CHANGE TYPE AND CONTROL VALVES THEREFOR
Owned by: CLACK CORPORATION
Serial Number: 71696215
THERMALL
Filed: October 11, 1955
HIGH FREQUENCY GENERATORS USED FOR HEATING MATERIALS
Owned by: LA ROSE, WILLIAM T.
Serial Number: 71696242
