A brand of Sears, Roebuck & Co., made by Atlas Press, Central Specialty (later King-Seeley), Double A Products, and others. The Dunlap brand first appeared in the spring 1937 catalog, for hand tools. In 1941 it replaced the earlier Companion brand on machinery. It was reportedly named after Thomas M. Dunlap, the head buyer in the hardware department of Sears Roebuck.
See the Craftsman entry for more information on the history of Dunlap and Sears. That entry also has links to lists of manufacturer prefixes used by Sears on their Craftsman, Dunlap, and Companion machinery.
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