Winkelmann v. Calvert

This is a United States Patent Office interference proceeding relating to an invention of a rubber product and the method of making the same, tlie issue being comprised in 25 counts, of which 21 are method counts and 4 are article counts, and involves certain Winkel-mann patents, from which all the counts are taken, and an application of Calvert, Serial No. 133,172, filed March 26, 1937.

Counts 1 to 19, inclusive, are taken from a patent to Winkelmann, No. 2,046,986, issued July 7, 1936, on an application filed March 18, 1935. Counts 20 to 22, inclusive, are taken from a patent to Winkel-mann,…