November 1938 Environmental control apparatus Trademarks by day
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Environmental control apparatus Trademarks filed in November 1938
SUPERPLATE
Filed: November 19, 1938
LIQUID HEAT EXCHANGERS OF THE TYPE COMPRISING A PLURALITY OF HEAT TRANSFER ELEMENTS MOVABLY MOUNTED IN JUXTAPOSED RELATION…
Owned by: SPX CORPORATION
Serial Number: 71412943
COMFORTAIRE
Filed: November 10, 1938
FORCED DRAFT COOLING AND VENTILATING UNITS
Owned by: HEAT CONTROLLER, INC.
Serial Number: 71412591
