Perkins Electric Switch Mfg. Co. v. Buchanan & Co.
U.S. Circuit Court for the District of Eastern Pennsylvania
In Equity. Suit for infringement of letters patent No. 626,927, for an incandescent lamp socket, granted to Charles G. Perkins June 13, 1899. On final hearing.
1Opinion of the Court
ARCHBALD, District Judge.1
The issues in this case are few, and comprised within a narrow compass. While infringement is denied in the answer, it was not seriously disputed at the argument, and could *135not successfully be on the proofs. The socket manufactured by the defendants, in its general structure, is closely patterned after that of the complainants, and, whatever may be the incidental improvements, infringes upon it, for which, of course, the patent held by the defendants covering these improvements affords no excuse. Neither, in view of this, can they very well question its utility,…
2Cited by8 opinions
- Stead Lens Co. v. Kryptok Co.Court of Appeals for the Eighth Circuit · 1914
- Kryptok Co. v. Stead Lens Co.District Court, W.D. Missouri · 1913
- Benjamin Electric Mfg. Co. v. Dale Co.Court of Appeals for the Second Circuit · 1907
- General Electric Co. v. Yost Electric Mfg. Co.District Court, N.D. Ohio · 1913
- Perkins Electric Switch Mfg. Co. v. KnowlesU.S. Circuit Court for the District of Massachusetts · 1910
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