| 1. | In 1963, the company, by then known as Pennwalt, built a new research center in the King of Prussia area, and moved out of Whitemarsh Hall, which was sold to a property investment group.
En 1963, la société, alors renommée Pennwalt, construit un nouveau centre de recherche à King of Prussia et quitte alors Whitemarsh Hall, qui est vendu à un groupe d'investissement immobilier. |
