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Patents for John Root
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
75,198	Mar. 03, 1868	J. Root	Improved bolt-heading machine	nut or bolt making machines
88,214	Mar. 23, 1869	J. Root	Improved bolt-heading machine	nut or bolt making machines
100,928	Mar. 15, 1870	J. Root	Improved machine for heading bolts	nut or bolt making machines

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