Glassmaster
From Classic Boat Library
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Glassmaster Plastics Company
5600 Shakespeare Rd.
Columbia, South Carolina
A 1970 trademark registration lists first use in commerce of "Glassmaster" as June 20, 1958. Also found listed at Lexington, South Carolina.
An earlier 1962 trademark registration lists Koolvent Metal Awning Company of Columbia, SC as a previous owner. The earliest model listed in the Sheler's Red Book guide is the 1958 Offshore 20' model, which was presumably the first model made by the company.
Model Information:
Trademarks
1960 Information