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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US399975610 Sep 197528 Dec 1976Prince Manufacturing, Inc.Tennis racket
US41532493 Jun 19778 May 1979Motion Analysis, Inc.Bioengineered game racket
US41650715 Jan 197621 Aug 1979Tennis racket
US417411010 Feb 197813 Nov 1979Inertia balanced golf club
US418352610 Jan 197815 Jan 1980Tennis training device
US41925057 Nov 197711 Mar 1980Pepsico, Inc.Game racket
US41969017 Mar 19778 Apr 1980Tennis racquet
US42002857 Dec 197729 Apr 1980Racquet weight system
US429157426 Mar 197929 Sep 1981Tennis racket
US43468916 Aug 197931 Aug 1982Rackets
US435355115 Aug 198012 Oct 1982Battelle Development CorporationTennis racket with frame mounted oscillatable weights
US43678744 Jan 197911 Jan 1983Starwin Industries, Inc.Tennis racquet and method of making same
US44784162 Sep 198223 Oct 1984Tennis racquet with offset, oval-shaped head
US469347424 Jun 198515 Sep 1987Dunlop Limited a British CompanyGames racket
US508377723 Oct 199028 Jan 1992Conditioning aid for racquet sports
US511012626 Jun 19915 May 1992Head Sportgeraete Gesellschaft m.b.H. & Co. OHG.Tennis racket
US51433706 Jan 19921 Sep 1992Rammer, Inc.Ball racket
US521169127 Nov 199018 May 1993Donnay International S.A.Tennis rackets
US53121156 Apr 199317 May 1994Jan Feng Sports Products Corp.Racket
US53682952 Jun 199329 Nov 1994Wilson Sporting Goods Co.Tennis racket
US54700629 Dec 199428 Nov 1995Yamaha CorporationTennis racket
US575563321 Dec 199626 May 1998Tennis stroke training and exercise device
US58938109 Aug 199613 Apr 1999Head Sport AktiengesellschaftTennis rackets
US610641722 Jun 199822 Aug 2000HEAD Sport AktiengesellschaftLightweight tennis racket having high frequency
US657249828 Mar 20013 Jun 2003Ball launching racket
USD33092425 May 199010 Nov 1992Tennis racket
USD44366323 Aug 200012 Jun 2001Tennis racket
USD44843624 Jan 200125 Sep 2001Tennis racket
USD47482012 Oct 199320 May 2003Benetton Sportsystem USA, Inc.Squash racquet
USRE3141928 Jan 198118 Oct 1983Tennis racket

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