US PATENT SUBCLASS 472 / 71
.~ Illusion caused by apparent appearance or disappearance

Current as of: June, 1999
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472 /   HD   AMUSEMENT DEVICES

57  DF  ILLUSION OR STAGE DEVICE {17}
71.~ Illusion caused by apparent appearance or disappearance

DEFINITION

Classification: 472/71

Illusion caused by apparent appearance or disappearance:

(under subclass 57) Amusement device wherein the illusionary effect created by the device involves an object or person either materializing into, or vanishing from, the view of an observer in a manner not apparent to the observer.