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Patents

Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US509445325 Jul 199010 Mar 1992Ball bat with inward off-set center of gravity
US541539810 Jun 199416 May 1995Softball bat
US542157230 Jul 19936 Jun 1995Full barrel aluminum baseball bat and end cap
US549428014 Dec 199427 Feb 1996Concave end cap with cone load for bats
US57856173 Mar 199728 Jul 1998Hillerich & Bradsby Co.Full barrel ball bat with end cap
US589982327 Aug 19974 May 1999DeMarini Sports, Inc.Ball bat with insert
US590462212 Sep 199718 May 1999Dana CorporationDriveshaft assembly with vented noise reduction structure
US59048033 Jun 199618 May 1999Hillerich & Bradsby Co.Apparatus for making a mold by heat shrinking
US59317503 Mar 19973 Aug 1999Hillerich & Bradsby Co.Full barrel ball bat with end cap
US59546022 Oct 199821 Sep 1999DeMarini Sports, Inc.Bat end plug and method for making the same
US596467327 Jan 199712 Oct 1999Hellerich & Brasby Co.Hollow metal bat with stiffened transition zone and method of making same
US604249314 May 199828 Mar 2000Jas. D. Easton, Inc.Tubular metal bat internally reinforced with fiber and metallic composite
US605382828 Oct 199725 Apr 2000Worth, Inc.Softball bat with exterior shell
US607717815 Dec 199720 Jun 2000Striking implement
US61394515 Apr 199931 Oct 2000Hillerich & Bradsby Co.Reinforced wood bat
US615911629 Feb 200012 Dec 2000Softball bat with exterior shell
US61767959 Aug 199923 Jan 2001Aluminum bat with improved core insert
US623491112 Sep 199722 May 2001Spicer Driveshaft, Inc.Driveshaft assembly having a noise reduction structure
US625450211 Jul 19963 Jul 2001Sport Fun, Inc.Weighting system for sports balls and hitting implements
US628722215 May 200011 Sep 2001Worth, Inc.Metal bat with exterior shell
US63028131 Oct 199816 Oct 2001Noise making novelty baseball bat
US63986753 Jul 20004 Jun 2002Wilson Sporting Goods Co.Bat with elastomeric interface
US642583615 Dec 199930 Jul 2002Mizuno CorporationBaseball or softball bat
US64821143 Jul 200019 Nov 2002Wilson Sporting Goods Co.Bat and method of manufacturing
US672998327 Apr 20004 May 2004Worth, Inc.Tubular sports implement with internal structural bridge
US680846422 Nov 200026 Oct 2004Reinforced-layer metal composite bat
US686362820 Mar 20008 Mar 2005Vibration damping striking implement
US717555220 Jul 200413 Feb 2007Wilson Sporting Goods Co.Ball bat formed of carburized steel
US72293704 Mar 200512 Jun 2007Rawlings Sporting Goods Company, Inc.Filament wound bat and winding and molding method therefore
US78505543 Dec 200814 Dec 2010Hillerich & Bradsby Co.Apparatus for deterring modification of sports equipment
US786711426 Apr 200711 Jan 2011Multi-walled tubular baseball bats with barrel inserts of variable geometry
US80621545 Nov 201022 Nov 2011Hillerich & BradsbyApparatus for deterring modification of sports equipment
USD49237316 May 200329 Jun 2004American Academy for Russian Martial Art and Combat Skill, IncCircular strength training apparatus
USD52057627 Sep 20049 May 2006Aarmacs, IncCircular strength training apparatus
USD59715412 Nov 200828 Jul 2009Bat shaped dumbbell

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