October 16, 1931 Trademarks
HYDROMATIC
Filed: October 16, 1931
ELECTRIC CONTROL DEVICES FOR HYDRAULIC ELEVATORS
Owned by: F. ROSENBERG ELEVATOR COMPANY
Serial Number: 71320132
VENTADOOR
Filed: October 16, 1931
VENTILATING PANELS FOR DOORS
Owned by: VAN ZILE VENTILATING CORPORATION
Serial Number: 71320177
