National Aluminate Corp. v. Permutit Co.

WOODROUGII, Circuit Judge.

It was alleged in the amended petition in the District Court in this case that plaintiff Alumínate company manufactured and sold ion exchanging products known as Nalcite A and Nalcite A X, for conditioning water, and that there was an actual controversy between itself and defendant Permutit company, in that Permutit asserted that Aluminate’s manufacture arid sale in*176fringed six patents owned or controlled by Permutit, namely:

2,191,063 Granted Feb. 20, 1940 Smit^

2,205,635 Granted June 25, 1940 Smit

2,191,060 Granted Feb. 20, 1940 1/iebknecht

2,206,007 Granted June 25,…