ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,794, issued on March 18, was assigned to MILWAUKEE ELECTRIC TOOL Corp. (Brookfield, Wis.).

"Dual size fastener driver" was invented by John J. Springer (Milwaukee), Kailyn M. Longueville (Lake Mills, Wis.) and Carter A. Gibson (Wauwatosa, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fastener driver includes a shank and a socket. The socket includes a first engagement portion with a first fastener and a second engagement portion engageable with a second fastener. The first fastener is different than the second fastener. The socket is movable relative to the shank between a first position, in which the first engagement portion is usable to e...