Patent, To: William M. Canfield From: United States Patent Office, March 1, 1875.

The Barry-Hayes Papers are maintained at Independence Seaport Museum, Philadelphia, PA. For more information, visit www.phillyseaport.org/library Signed by Acting Commissioner Ellis Spear. Patent Number 110, 432. Patent is "improvements in lubricating compounds for steam and other packing".

Main Author: United States Patent Office.
Published: 1875
Subjects:
Online Access: http://digital.library.villanova.edu/Item/vudl:169852
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