Annernen v. Penn

On October 30, 1928, the appellant, Rolf Erik Annernen, filed an application in the United States Patent Office for a patent on certain improvements in devices for automatically maintaining a suitable volume of air or other gas in pressure tanks. The appellee, Albert Penn, filed an application in said office on May 13, 1929, for a patent on a similar invention. The disclosures being of like subject matter, an interference was declared between said applications on May 2, 1930. The_subject matter of the interference was stated in one count, which was claim 12 of Penn and claim 29 of Annernen.…