Electric Gas Lighting Co. v. Boston Elec. Co. - 139 U.S. 481 (1891)
U.S. Supreme Court
Electric Gas Lighting Co. v. Boston Elec. Co., 139 U.S. 481 (1891)
Electric Gas Lighting Company v. Boston Electric Company
Argued March 20, 1891
Decided April 6, 1891
139 U.S. 481
APPEAL FROM THE CIRCUIT COURT OF THE UNITED
STATES FOR THE DISTRICT OF MASSACHUSETTS
Claims 2, 4 and 5 of reissued letters patent No. 9743, granted June 7, 1881, to the Franklin Electric Gas Lighting Company, as assignee of Jacob P. Tirrell, the inventor, for improvements in electrical apparatus for lighting street lamps, etc., the original letters patent, No. 130,770, having been granted to said Tirrell August 20, 1872, and the application for the reissue having been filed February 21, 1881, are invalid as against the defendant's apparatus, constructed under letters patent No. 281,345, granted July 17, 1883, to the Boston Electric Company, as assignee of Charles H. Crockett, the inventor, on an application filed April 11, 1883, for improvements in electric gas lighters.
The original patent and the reissue compared as to the specification and the claims.