. . "Alcon Laboratories (UK) Ltd., Hemel Hempstead, Herts" . "ALCON THILO" . "ALCON LTD." . "ALCON LABORATORIES INC., Fort Worth, Texas" . "ALCON LABORATORIES IRELAND LIMITED, Cork" . "ALCON PHARMACEUTICAL LTD" . "LABORATOIRES ALCON, KAYSERSBERG" . "Alcon Cusi S.A., Barcelona" . "ALCON PHARMACEUTICALS LTD., PRAHA" . "ALCON N.V." . "ALC" .