Patents for John L. Mason


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Patents for John L. Mason
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	19,786	Mar. 30, 1858	J.L. Mason	Chuck for Making Sheet Metal Screws
	88,885	Apr. 13, 1869	J.L. Mason	Screw Forming Machine
	131,695	Sep. 24, 1872	J.L. Mason	Improvement in Fruit-Jars