Title:
Practice ball
United States Patent 3069170
US Patent References:
/1021520.html
- - 1021520

Practice golf ball
- - 1602725

Practice golf ball
- - 1981959

Molding method
- - 2525965

Treatment of expanded articles
- - 2525966


Inventors:
Dillon Jr., John A.
Publication Date:
12/18/1962
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Assignee:
DOW CHEMICAL CO
Primary Class:
473/280
Other Classes:
264/321, 29/558, 473/371, 273/DIG.004, 473/600, 264/53, 264/DIG.083
International Classes:
A63B37/00
US Patent References:
2670528Process of thermal regulation of work and tools
2743931Practice or play ball and method of making same
2753599
2948664Method of making cellular polyethylene
Foreign References:
GB524063A
GB753259A
GB783324A