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| US3981508 | 28 Nov 1975 | 21 Sep 1976 | K-tel International, Inc. | Golf practice device | | US4097044 | 26 Nov 1976 | 27 Jun 1978 | | Baseball batting training apparatus | | US4175744 | 30 Mar 1978 | 27 Nov 1979 | Chi Rho Corporation | Eye-hand coordinator | | US8172696 | 2 Sep 2011 | 8 May 2012 | Calgolf LLC | Sports training device | | USD351692 | 27 Jul 1992 | 18 Oct 1994 | | Pet tether |
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