Practice or play ball and method of making same
United States Patent 2743931
US Patent References:
/RE21063.html
- - RE21063

Playing ball
- - 1653893

Method of making cellular thermoplastic receptacles
- - 2452999

Practice golf ball
- - 2484397

Molding method
- - 2525965


Inventors:
Pooley, Robert W.
Kohrn, Robert C.
Publication Date:
05/01/1956
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Assignee:
US RUBBER CO
Primary Class:
473/280
Other Classes:
473/377, 264/321, 521/95, 521/145, 521/144, 264/54, 264/46.400, 521/89, 473/598, 473/600, 473/372
International Classes:
B29D31/00; C08J9/06; B29C43/00; B29C63/00; C08J9/00
US Patent References:
2570182Process of making cellular material
Foreign References:
GB646879A