Core box dowel pin
United States Patent 2677160
US Patent References:
/0279557.html
- - 0279557

Resilient plug, dowel, and coupling pin
- - 1743492

/2217367.html
- - 2217367

Dowel pin
- - 2221141

Grip bolt
- - 2273102


Inventors:
Peterson, Edwin F.
Publication Date:
05/04/1954
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Assignee:
Peterson, Edwin F.
Primary Class:
403/360
Other Classes:
403/19, 403/345, 403/225, 403/296
International Classes:
B22C21/10; B22C21/00
US Patent References:
2423341Blowhole plug for sand boxes or containers
2499146Dowel pin
Foreign References:
GB257703A