(under subclass 131) Subject matter wherein said equipment or device includes means to detect a condition of a struck object during movement thereof; or including means to provide information to the player concerning movement of the struck object.
SEE OR SEARCH THIS CLASS, SUBCLASS:
152, for an electrical projectile responsive sensor or indicator combined with an addressing surface or target.
180, for a projectile responsive indicator on a putting surface, and subclass 190 for a projectile responsive indicator combined with a target.
