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. Allen's digest of plows, with attachments, patented in the United States from 1789 to January 1883 ... Plows; Patents. SGO SHOVEL. J. M. CLARK. Shovel-Plow Pfttented June 11. D GILBERT. Stovel-Plow. Patented June 26. 1867,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Allen, James T. (James Titus). [Washington, D. C. , Joseph Bart, Printer
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectpatents, bookyear1883