Baseball practice standard
United States Patent 2976041
US Patent References:
/1242046.html
- - 1242046

Amusement device
- - 1396247

Ball practicing device
- - 1862044

Baseball practice apparatus
- - 2527906

Rotating seesaw
- - 2544589


Inventors:
White, John G.
Publication Date:
03/21/1961
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Assignee:
White, John G.
Primary Class:
473/417
Other Classes:
473/398
International Classes:
A63B69/00
US Patent References:
2616692Adjustable batting tee
2884250Practice tee