Legal Opinion
Powers-Kennedy Contracting Corp. v. Concrete Mixing & Conveying Co.
Supreme Court of the United States
Decided December 15, 1930No. 3 and 4PublishedCited by 131 opinions
1Opinion of the CourtJustice Roberts
Court.
These cases involve the validity, and the alleged infringement, of letters patent No. 1,127,660, of date February 9,1915, isued to John H. McMichael, and assigned to Concrete Mixing and Conveying Company.
The Court of Appeals of the Second Circuit, in Concrete Mixing and Conveying Company v. Ulen Contracting Corporation, 12 F. (2d) 929, held the patent valid and infringed. In No. 3 the. District Court followed that decision. Its decree was affirmed by the Circuit Court of Appeals of the Second Circuit, 27 F. (2d) 668.. Meantime, in No. 4, the District Court for the Western District of…
2Cases cited7 opinions
- Railway Co. v. SaylesSupreme Court of the United States · 1878
- Hailes v. Van WormerSupreme Court of the United States · 1874
- Grinnell Washing MacHine Co. v. E. E. Johnson Co.Supreme Court of the United States · 1918
- Roberts v. RyerSupreme Court of the United States · 1875
- Concrete Appliances Co. v. GomerySupreme Court of the United States · 1925
2 more not listed; retrieve them via the Exa API.
3Cited by131 opinions
- Graham v. John Deere Co. of Kansas CitySupreme Court of the United States · 1966
- Cuno Engineering Corp. v. Automatic Devices Corp.Supreme Court of the United States · 1942
- Autogiro Company of America v. The United StatesUnited States Court of Claims · 1967
- Altoona Publix Theatres, Inc. v. American Tri-Ergon Corp.Supreme Court of the United States · 1935
- Marconi Wireless Co. v. United StatesSupreme Court of the United States · 1943
126 more not listed; retrieve them via the Exa API.