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| US3943505 | 24 Feb 1975 | 9 Mar 1976 | | Automatic information system for the organization of gymnastic competitions |
| US4432545 | 30 Apr 1982 | 21 Feb 1984 | | Non-lethal cock fighting system |
| US5027102 | 15 Sep 1989 | 25 Jun 1991 | | Scoring system for athletic events |
| US7607403 | 27 Sep 2006 | 27 Oct 2009 | | Method of providing scoring information at a wrestling meet |
