Legal Opinion
Aero Spark Plug Co. v. BG Corporation
Court of Appeals for the Second Circuit
Decided August 14, 1942No. 319PublishedCited by 68 opinions
1Opinion of the Court
CHASE, Circuit Judge.
The decree was based upon two grounds, non-infringement and invalidity of Claim 2, which is the only claim in issue.
Kasarjian’s patent involves spark plugs for use in airplane engines. The usual aviation spark plug assembly has a core in the center consisting of a metal rod or spindle. The lower end of this spindle constitutes one of the electrodes at the spark gap, and therefore the whole must be insulated from the other electrode known as the ground electrode. Because of the intense heat in aviation engines, mica is used as an insulator. Several thin laminations of mica…
2Cases cited10 opinions
- Boyden Power-Brake Co. v. Westinghouse Westinghouse v. Boyden Power-Brake Co.Supreme Court of the United States · 1898
- Westinghouse v. Boyden Power Brake Co.Supreme Court of the United States · 1898
- Schriber-Schroth Co. v. Cleveland Trust Co.Supreme Court of the United States · 1940
- Exhibit Supply Co. v. Ace Patents Corp.Supreme Court of the United States · 1942
- Schriber-Schroth Co. v. Cleveland Trust Co.Supreme Court of the United States · 1941
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3Cited by68 opinions
- Durham v. United StatesCourt of Appeals for the D.C. Circuit · 1954
- Autogiro Company of America v. The United StatesUnited States Court of Claims · 1967
- Sinclair & Carroll Co. v. Interchemical Corp.Supreme Court of the United States · 1945
- In Re LopezCalifornia Supreme Court · 1965
- In Re J. P. Linahan, Inc.Court of Appeals for the Second Circuit · 1943
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