Tennis balls
United States Patent 2896949
US Patent References:
Method for making sponge balls
- - 1402682

Ball
- - 1614853

Rubber ball
- - 2131756

Method of making cellular thermoplastic receptacles
- - 2452999


Inventors:
Louis, Dunker Henry Christian
Publication Date:
07/28/1959
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Assignee:
Louis, Dunker Henry Christian
Primary Class:
473/604
Other Classes:
521/54, 525/206, 273/DIG.010, 521/139, 525/237
International Classes:
B29D22/04; B29D22/00