MANTON, Circuit Judge.
The Hartley patent, No. 1,183,875, is for an electrical circuit used in a radio apparatus. It was applied for September 13, 1915, and granted May 23, 1916. The Rice patent is for a system of amplification of small currents. The application was filed July 31, 1917, and the patent granted March 16, 1920. The claims sued on are as follows:
Hartley Patent, No. 1,183,875.
"1. An electrical network containing a thermionic amplifier...
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