I could find addresses of two companies. I know the first is current:
American Animation, Inc
6 East Spruce Street, PO Box 335
Morrestown, New Jersey 08057 USA
(609) 235-0345
or
American Polarizers, Inc
Executive Office 1500 Spring Garden Street
Philadelphia, Pennsylvania 19101
(215) 564-2400
Plant 141 X 7th St
Reading, Pennsylvania 19603