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forstner-bit-patent USA1 - Forstner drill bit - Google Patents
The unibit was invented by Harry C. Oakes and patented in It was sold only by the Unibit Corporation in the s until the patent expired, and was later sold by other companies. Unibit is a trademark of Irwin Industrial Tools. May 11,  · Ingo Forstner has filed for patents to protect the following Forstner Bits For Sale Australia inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Forstner Drill Bit Brad Point Patent and Trademark Office (USPTO). and operating the drilling assembly and a drill bit to form an Forstner Bit For Router exit trough in a borehole wall. 2 in. High-Speed Steel Forstner Bit Fashioned with a double-ground serrated edge Fashioned with a double-ground serrated edge for minimal chipping and splintering, the Diablo 2 in. High-Speed Steel Forstner Bit drills overlapping, angled and pocket holes in all types of wood. This dependable bit is easy to control and has an ultra-sharp spur that won’t walk or skate on your work piece.

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