4264071 Bowling ball 1981-04-28 Randolph 4258921 Golf ball 1981-03-31 Worst 4256304 Baseball 1981-03-17 Smith et al. 4235441 Diffractionated golf ball 1980-11-25 Ciccarello 4201384 Set of golf balls 1980-05-06 Barber 4142727 Golf balls 1979-03-06 Shaw et al. 4141559 Two-piece soli...