Legal Opinion
Hydraulic Press Mfg. Co. v. Williams, White & Co.
Court of Appeals for the Seventh Circuit
Decided December 9, 1947No. 8978PublishedCited by 13 opinions
1Opinion of the Court
KERNER, Circuit Judge.
Plaintiff appeals from a judgment dismissing its complaint which charged that defendant in the construction and sale of a hydraulic press had used the alleged inventions of Ernst reissue patent No. 18287, dated December 15, 1931, and Ernst reissue patent No. 19694, dated September 10, 1935, in infringement of fifteen claims of No. 18287 and twenty-two claims of No. 19694. Both patents relate to control mechanisms for hydraulic motors. The defenses were invalidity, non-infringement, and that both patents had been improperly issued.
At the trial plaintiff limited its charge…
2Cases cited11 opinions
- MacHine Co. v. MurphySupreme Court of the United States · 1878
- Lincoln Engineering Co. v. Stewart-Warner Corp.Supreme Court of the United States · 1938
- Schriber-Schroth Co. v. Cleveland Trust Co.Supreme Court of the United States · 1940
- Marconi Wireless Co. v. United StatesSupreme Court of the United States · 1943
- Knapp v. MorssSupreme Court of the United States · 1893
6 more not listed; retrieve them via the Exa API.
3Cited by13 opinions
- James C. Hobbs v. Wisconsin Power & Light Company and William Powell CompanyCourt of Appeals for the Seventh Circuit · 1957
- Bolten v. General Motors CorporationCourt of Appeals for the Seventh Circuit · 1950
- Wilson & Co. v. Fremont Cake & Meal Co.District Court, D. Nebraska · 1949
- Bianchi v. BariliCourt of Appeals for the Ninth Circuit · 1948
- United States v. E. I. Du Pont De Nemours & Co.District Court, N.D. Illinois · 1953
8 more not listed; retrieve them via the Exa API.