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Patents for Green Instrument Co.
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
2,627,658Feb. 10, 1953E.T. GreenEngraving Machinemetal engraving machines
2,703,455Mar. 08, 1955E.T. GreenAutoradial Engraving Devicemetal engraving machines
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