Cedarapids, Inc. v. , Inc., 895 F. Supp. 1230 (N.D. Iowa 1995)
Cedarapids had been manufacturing a conical crusher, known as the Rollercone Classic, in 36, 45, 54, 60, and 66 inch sizes since the late 1950s. However, in 1989, an applications engineer for the El-Jay division of Cedarapids named Robert Gemmel *1243 reviewed the '745 patent, and recognized that it posed a possible threat to the Rollercone ...
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