This pamphlet is not an interference but rather a bill of complaint filed by the Edison Electric Light Co. in its patent infringement suit against the United States Electric Lighting Co. Also included in the pamphlet are 13 pages of technical notes and drawings by Edison, which were entered as exhibits in the suit. The Edison interests claimed that the lamp patents of William E. Sawyer and Albon Man, which had been assigned to the United States Electric Lighting Co., infringed on Edison's patent for lamp filaments (U.S. Patent 223,898). For the complete record of this case, click here.