![Multiple evaporation source: Varian Associates, Vacuum Products Division, 611 Hansen Way, Palo Alto, California, U.S.A. : Varian Associates Ltd., Fox Oak, Seven Hills Road, Walton-on-Thames, Surrey, Great Britain : Varian AG, Baarerstrasse 77, Zug, Switzerland]()
Multiple evaporation source: Varian Associates, Vacuum Products Division, 611 Hansen Way, Palo Alto, California, U.S.A. : Varian Associates Ltd., Fox Oak, Seven Hills Road, Walton-on-Thames, Surrey, Great Britain : Varian AG, Baarerstrasse 77, Zug, Switzerland1964