Minton v. Thomas

The appellants filed an application on June 9, 1925, for a patent on improvements “ in filter systems for loud speakers.” On July 12, 1927, a patent was issued to the appellee upon an invention re-*1154iating to loud speakers upon his application filed March 15, 1926. On October 12, 1927, the appellants filed an amendment in the Patent Office, in and by means of which they amended their specification so that the same would state one of the objects of the appellants’ alleged invention to be the same as that set forth in appellee’s said patent. In addition ,the appellants added claims 16 to 23,…