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Hewitt Piston-Rod Packing, Patent Model
From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.
About this work
This model was submitted to the U.S. Patent Office with the application for the patent issued to John Hewitt, of St. Louis, Missouri, June 3, 1879, no. 216038.
National Museum of American History’s own descriptionCredit lineHewitt Piston-Rod Packing, Patent Model. 1879. Hewitt, John. National Museum of American History. CC0.
