Legal Opinion
No-Joint Concrete Pipe Co., a Corporation v. R. A. Hanson, an Individual, R. A. Hanson Co., Inc., a Corporation
Court of Appeals for the Ninth Circuit
Decided May 10, 1965No. 19403PublishedCited by 7 opinions
1Opinion of the Court
MERRILL, Circuit Judge.
Appellant has brought this suit for infringement of patent. 1 Appellees defended upon the grounds, first, that appellant’s patent was invalid for lack of invention, and, second, that there was no infringement. The District Court for the Eastern District of Washington, Northern Division, held the patent to be valid but not infringed. Appellees challenge the first holding. Appellant appeals from the second.
The device in question is for the forming of concrete pipe in place for use in irrigation and drainage systems. By means of the device pipe is formed by the following…
2Cases cited7 opinions
- Royal Typewriter Co. v. Remington Rand, Inc.Court of Appeals for the Second Circuit · 1948
- Specialty Equipment & MacHinery Corp. v. Zell Motor Car Co.Court of Appeals for the Fourth Circuit · 1952
- Industrial Instrument Corporation v. The Foxboro CompanyCourt of Appeals for the Fifth Circuit · 1962
- Apex Electrical Mfg. Co. v. Maytag Co.Court of Appeals for the Seventh Circuit · 1941
- Karl Zysset and New-Nel Kitchen Products Company v. Popeil Brothers, Inc.Court of Appeals for the Seventh Circuit · 1960
2 more not listed; retrieve them via the Exa API.
3Cited by7 opinions
- Blumcraft of Pittsburgh v. Citizens & South. Nat. Bank of SCDistrict Court, D. South Carolina · 1968
- Ex-Cell-O Corp. v. Litton Industrial Products, Inc.District Court, E.D. Michigan · 1979
- Ramos v. Biomet, Inc.District Court, S.D. Florida · 1993
- Duplan Corp. v. Deering Milliken, Inc.District Court, D. South Carolina · 1973
- Frank H. Taylor & Son, Inc. v. CommissionerUnited States Tax Court · 1973
2 more not listed; retrieve them via the Exa API.