Campbell v. American Shipbuilding Co.
Court of Appeals for the Sixth Circuit
Appeal from the Circuit Court of the United States for the North•ern District of Ohio. Suit in equity by James Campbell against the American Shipbuilding Company. Decree for defendant, and complainant appeals.
1Opinion of the Court
WARRINGTON, Circuit Judge.
This is a suit for infringement of patent, issued tó James Campbell under date of June 4, 1901, No. *499675,812, for improvement in navigable vessels. The answer comprises denials of utility, infringement, and the quality of invention, and averments of anticipation through various patents of the United States, Great Britain, and France, and also averments of amendments made of the application while pending in the Patent Office, whereby Campbell is estopped from claiming that defendant’s vessels are within the scope of the patent. The latter defense was sustained in…
2Cases cited10 opinions
- Winans v. DenmeadSupreme Court of the United States · 1854
- Morgan Envelope Co. v. Albany Perforated Wrapping Paper Co.Supreme Court of the United States · 1894
- Shepard v. CarriganSupreme Court of the United States · 1886
- Roemer v. PeddieSupreme Court of the United States · 1889
- Brill v. St. Louis Car Co.Court of Appeals for the Eighth Circuit · 1898
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3Cited by11 opinions
- Texas Co. v. Anderson-Prichard Refining CorporationCourt of Appeals for the Tenth Circuit · 1941
- Frey v. Marvel Auto Supply Co.Court of Appeals for the Sixth Circuit · 1916
- Grand Rapids Show Case Co. v. BakerCourt of Appeals for the Sixth Circuit · 1914
- W. W. Sly Mfg. Co. v. Russell & Co.Court of Appeals for the Sixth Circuit · 1911
- Grand Rapids Refrigerator Co. v. StevensCourt of Appeals for the Sixth Circuit · 1928
6 more not listed; retrieve them via the Exa API.