Legal Opinion
The Weatherhead Company and Paul D. Wurzburger v. Drillmaster Supply Company and James E. Rutledge and Kenneth C. Horn
Court of Appeals for the Seventh Circuit
Decided December 8, 1955No. 11308PublishedCited by 22 opinions
1Opinion of the Court
SWAIM, Circuit Judge.
The plaintiffs-appellants are the assignees of two patents: one, No. 2,139,-413, issued December 6, 1938, on a joint for pipe connections, and the other, No. 2,171,217, issued August 29, 1939, on a metal packing ring for use with, as a part of, such a joint for pipe connections as was described in the first patent. Plaintiffs brought this action for infringement of both patents. The trial court held that Patent No. 2,139,413 (hereafter referred to as 413) was valid and infringed, and that Patent No. 2- 171,217 (hereafter referred to as 217) was invalid for lack of…
2Cases cited13 opinions
- Western States MacH. Co. v. S. S. Hepworth Co.Court of Appeals for the Second Circuit · 1945
- Traitel Marble Co. v. U. T. Hungerford Brass & Copper Co.Court of Appeals for the Second Circuit · 1927
- Old Town Ribbon & Carbon Co. v. Columbia Ribbon & Carbon Mfg. Co.Court of Appeals for the Second Circuit · 1947
- B. F. Sturtevant Co. v. Massachusetts Hair & Felt Co.Court of Appeals for the First Circuit · 1941
- Pyle Nat. Co. v. LewinCourt of Appeals for the Seventh Circuit · 1937
8 more not listed; retrieve them via the Exa API.
3Cited by22 opinions
- Harry A. Pursche v. Atlas Scraper and Engineering Co., a Corporation, Atlas Scraper and Engineering Co., a Corporation v. Harry A. PurscheCourt of Appeals for the Ninth Circuit · 1962
- Application of Edwin H. Land and Howard G. RogersCourt of Customs and Patent Appeals · 1966
- Clayton v. WarlickCourt of Appeals for the Fourth Circuit · 1956
- Helen Russell Pierce, of the Last Will and Testament of George Washington Pierce, Deceased v. Allen B. Du Mont Laboratories, IncCourt of Appeals for the Third Circuit · 1961
- Gemveto Jewelry Co., Inc. v. Jeff Cooper Inc.District Court, S.D. New York · 1983
17 more not listed; retrieve them via the Exa API.