OPINION
BIUNNO, District Judge.
The defendant, L. E. Sauer Machine Company, Inc. (Sauer) claims to be the patentee of U.S. Patent No. 3,522,754 (the '754 patent) issued August 4, 1970 on the application of Louis E. Sauer (inventor) filed August 14, 1967.
The patent is on improvements to cylinders of resilient plastic (such as polyurethane) which are placed, as sleeves, over round metal cylinders called anvils, in machines used to cut corrugated cardboard...
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