Patents for James Chatwin


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Patents for James Chatwin
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	GB-190,908,038	Jan. 13, 1910	.	Improvements in apparatus for facing or preparing pipes for the purposes of making joints
	GB-190,908,274	Mar. 24, 1910	A. Chatwin, J. Chatwin, T. Chatwin, T.P. Chatwin, J. Virtue	Improvements in and relating to die heads of screwing machines