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A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
A63F7/00—Indoor games using small moving playing bodies, e.g. balls, discs or blocks
A63F7/22—Accessories; Details
A63F7/30—Details of the playing surface, e.g. obstacles; Goal posts; Targets; Scoring or pocketing devices; Playing-body-actuated sensors, e.g. switches; Tilt indicators; Means for detecting misuse or errors
A63F7/305—Goal posts; Winning posts for rolling-balls
Protection automatique des courts de tennis sous surveillance electronique 24 heures sur 24, avec ramassage de balles automatique et avec un systeme d'entretien pour les courts en terre battue