Citada por|
| US4191167 | 16 Jun 1977 | 4 Mar 1980 | | Solar energy fluid heater | | US4438924 | 13 Abr 1981 | 27 Mar 1984 | | Game ball | | US4861028 | 29 Jul 1988 | 29 Ago 1989 | Wilson Sporting Goods Co. | Game ball | | US4919422 | 6 Jul 1989 | 24 Abr 1990 | Tonka Corporation | Curve ball | | US5123659 | 1 Mar 1991 | 23 Jun 1992 | Wilson Sporting Goods Co. | Game ball | | US5246228 | 27 Ene 1992 | 21 Sep 1993 | | Apparatus and method of playing buntball | | US5280906 | 8 Jul 1992 | 25 Ene 1994 | | Performance game ball | | US5700211 | 26 Abr 1996 | 23 Dic 1997 | | Ball for throwing in patterns in which a baseball can be thrown | | US6354970 | 27 Jul 1999 | 12 Mar 2002 | | Curve ball | | US6746351 | 9 Ago 2002 | 8 Jun 2004 | Robert I. Goodman | Practice ball | | US6837814 | 3 Jul 2003 | 4 Ene 2005 | Play Games Sport Pty. Ltd. | Ball | | US7608003 | 14 Feb 2006 | 27 Oct 2009 | Little Kids, Inc. | Game ball | | USD322105 | 6 Jul 1989 | 3 Dic 1991 | Tonka Corporation | Ball | | USD539367 | 24 Feb 2006 | 27 Mar 2007 | | Sports ball | | USD629057 | 10 Sep 2010 | 14 Dic 2010 | NIKE, Inc. | Ball | | USD629058 | 10 Sep 2010 | 14 Dic 2010 | NIKE, Inc. | Ball | | USD648406 | 25 Oct 2010 | 8 Nov 2011 | Franklin Sports, Inc | Molded training baseball |
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