Legal Opinion
Kwikset Locks, Inc. v. Hillgren. Hillgren v. Kwikset Locks, Inc.
Court of Appeals for the Ninth Circuit
Decided March 22, 1954No. 13060PublishedCited by 50 opinions
1Opinion of the Court
STEPHENS, Circuit Judge.
Carl A. Hillgren is the holder of United States Letters Patent No. 2,403,597, issued July 9, 1946, for an invention of a “Door Lock”. Kwikset' Locks, Inc., is the owner of United States Letters Patent No. 2,489,160, issued to Adolf Schoepe and Albert S. Lord, jointly, on October 20, 1947, on a “Doorknob and Method of Making Same”, and assigned to Kwikset on November 22, 1949. Hill-gren brought suit in the United States District Court for the Southern District of California, charging Kwikset, Adolf Schoepe, and Karl Reinhard (hereinafter referred to collectively as…
2Cases cited19 opinions
- Graver Tank & Mfg. Co. v. Linde Air Products Co.Supreme Court of the United States · 1950
- Great Atlantic & Pacific Tea Co. v. Supermarket Equipment Corp.Supreme Court of the United States · 1951
- Cuno Engineering Corp. v. Automatic Devices Corp.Supreme Court of the United States · 1942
- McClain v. OrtmayerSupreme Court of the United States · 1891
- Lincoln Engineering Co. v. Stewart-Warner Corp.Supreme Court of the United States · 1938
14 more not listed; retrieve them via the Exa API.
3Cited by50 opinions
- Lundgren v. FreemanCourt of Appeals for the Ninth Circuit · 1962
- Moist Cold Refrigerator Co. v. Lou Johnson Co.Court of Appeals for the Ninth Circuit · 1957
- Fmc Corporation v. The F. E. Myers & Bro. Co.Court of Appeals for the Sixth Circuit · 1967
- Talon, Inc. v. Union Slide Fastener, Inc., Union Slide Fastener, Inc. v. Talon, Inc.Court of Appeals for the Ninth Circuit · 1959
- Bergman v. Aluminum Lock Shingle Corp. of AmericaCourt of Appeals for the Ninth Circuit · 1957
45 more not listed; retrieve them via the Exa API.