Tennis ball delivery system which serves balls based on a prior serving result

Bibliographische Detailangaben

1. Verfasser:	FAN, CHENUAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AMUSEMENTS APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING BALL GAMES GAMES HUMAN NECESSITIES SPORTS TRAINING EQUIPMENT
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