Method for the fabrication of multicolored balls for a twisting ball display
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United States of America Patent
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Sep 6, 1994
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app pub date -
Dec 11, 1992
filing date -
Oct 29, 1991
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Abstract
A method of forming hemispheric bichromal balls, including the steps bringing together two streams of differently colored hardenable liquids for forming a single side-by-side bichromal stream, expelling said single side-by-side bichromal stream into a fluid as one or more free jets whose forward ends becomes unstable and break up into droplets which form into spherical balls, each of the balls comprising hemispheres of differently colored hardenable liquid, and finally hardening the balls.
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