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Patents for William T. Johnston
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
590,134Sep. 14, 1897W.T. Johnston, E. Crawley, Jr.Coffee Roasting Machinecoffee roasters
590,135Sep. 14, 1897W.T. Johnston, E. Crawley, Jr.Coffee Roasting Machinecoffee roasters
590,567Sep. 28, 1897W.T. Johnston, E. Crawley, Jr.Coffee Roasting Machinecoffee roasters
615,252Dec. 06, 1898W.T. Johnston, E. Crawley, Jr.Coffee Roasting Machinecoffee roasters
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