Patents for Porter Saw Co.


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Patents for Porter Saw Co.
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	88,585	Apr. 06, 1869	G.H. Porter	Improved Process of hardening Steel
	111,792	Feb. 14, 1871	S.W. Valentine	Improvement in Methods of Attaching Handles to Saws