ALEXANDRIA, Va., Dec. 9 -- Acushnet, Fairhaven, Massachusetts, has been assigned a patent (9,833,664) developed by two co-inventors for "dimple patterns for golf balls." The co-inventors are Michael R. Madson, Easton, Massachusetts, and Nicholas M. Nardacci, Barrington, Rhode Island. The abstract states: "The present invention provides a method for arranging dimples on a golf ball surface in which the dimples are arranged in a pattern derived from at least one irregular domain generated from a r . . .