72322237
Mar 20, 1969
Mar 31, 1970
HEAT-REFLECTING, LIGHT-TRANSMITTING PLASTIC AND PLASTIC LAMINATE SHEET MATERIALS FOR APPLICATION TO WINDOWS, SKYLIGHTS, TRANSPARENT DOORS, ONE-WAY OBSERVATION WINDOWS, AND IN THE MANUFACTURE OF ROLLER-TYPE WINDOW SHADES, VENETIAN BLINDS, AND VERTICAL STRIP BLINDS
Chemicals