New Products Corporation, a Delaware Corporation v. Outboard, Marine & Manufacturing Company, a Delaware Corporation

SCHNACKENBERG, Circuit Judge.

From a judgment of the district court holding valid claims 1, 3 and 5 of Banker patent 2,409,236 owned by plaintiff, New Products Corporation, a Delaware corporation, and determining that Outboard. Marine & Manufacturing Company, a Delaware corporation, defendant, infringed said claims, defendant has appealed.

The Banker patent is for a method (defined by the claims in suit) of making roller cages. These claims pertain to steps performed upon a metal cylinder to form, in an economical and practical way, the device known as a bearing cage. A bearing cage is…