Games using tangible projectile – Playing field or court game; game element or accessory... – Practice or training device
Reexamination Certificate
2005-04-12
2005-04-12
Vidovich, Gregory (Department: 3711)
Games using tangible projectile
Playing field or court game; game element or accessory...
Practice or training device
C473S415000
Reexamination Certificate
active
06878077
ABSTRACT:
A training device for batters which provides a visual and sensual indication to the batter that her or she is experiencing one of several swing defects, comprising a series of flexible standards about the perimeter of a proper swing plane leading the batter to make contact with a ball at an imaginary plate.
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patent: 2094810 (1937-10-01), Oppenheimer
patent: 4886267 (1989-12-01), Licciardi et al.
patent: 5087039 (1992-02-01), Laseke
patent: 5595384 (1997-01-01), Hardison, Jr.
Chambers M.
Haase Dennis B.
Vidovich Gregory
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