Baseball pitcher's practice device
United States Patent 3312467
US Patent References:
/1142184.html
- - 1142184

Practice guide for baseball pitchers
- - 1592005

Net supporting arrangement
- - 3195898


Inventors:
Dawson, Billie D.
Publication Date:
04/04/1967
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Assignee:
Dawson, Billie D.
Primary Class:
473/454
International Classes:
A63B69/00