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Corespan, Inc. Patents
Corespan, Inc.
Geneva, OH
No. of patents:

Patent Number Title Of Patent Date Issued
4821915 Twin wall fiberglass tank and method of producing the same April 18, 1989
A twin wall fiberglass tank and method of producing the same has an inner wall, an outer wall, and a core disposed between the inner and outer walls which forms a plurality of air gaps. Each of the inner and outer walls is formed of one or multiple layers of woven fiberglass roving and a

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