Legal Opinion
Water Hammer Arrester Corp. v. Tower
District Court, E.D. Wisconsin
Decided December 16, 1944No. Civil Action 756PublishedCited by 7 opinions
1Opinion of the Court
DUFFY, District Judge.
This is an action for a declaratory judgment that the patent in suit is invalid and not infringed. On February 17, 1942, U. S. Letters Patent No. 2,273,766, entitled “Water Hammer Arrester,” was granted to the defendant on application filed on August 4, 1940. By letter dated February 19, 1942, defendant notified plaintiff of the issuance of the patent in suit and charged that water hammer arresters manufactured and sold by plaintiff infringed said patent. Defendant followed this with a second letter to plaintiff dated March 10, 1942, which again charged it with…
2Cases cited6 opinions
- United Carbon Co. v. Binney & Smith Co.Supreme Court of the United States · 1942
- Permutit Co. v. Graver Corp.Supreme Court of the United States · 1931
- Schriber-Schroth Co. v. Cleveland Trust Co.Supreme Court of the United States · 1938
- Reliance Life Ins. Co. v. BurgessCourt of Appeals for the Eighth Circuit · 1940
- Baumgardner v. HudsonCourt of Appeals for the D.C. Circuit · 1922
1 more not listed; retrieve them via the Exa API.
3Cited by7 opinions
- Aralac, Inc. v. Hat Corporation of AmericaCourt of Appeals for the Third Circuit · 1948
- Kawneer Co. v. Pittsburgh Plate Glass Co.District Court, W.D. Michigan · 1952
- Phillips Petroleum Co. v. Shell Development Co.District Court, D. Delaware · 1947
- Water Hammer Arrester Corp. v. TowerCourt of Appeals for the Seventh Circuit · 1946
- F. E. Myers & Bros. v. Goulds Pumps, Inc.District Court, W.D. New York · 1947
2 more not listed; retrieve them via the Exa API.