ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,538,881, issued on Feb. 3.
"Maple tree tapping tool" was invented by Zebulun Robert Leffler (Varysburg, N.Y.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A device configured to be adapted to a drill, the drill having a drill bit and the drill bit having a central axis, the device including an adjustable ring configured to be adapted to the drill, a front plate; a plurality of pins disposed on the front plate, each the plurality of pins including a tip; and a slide including a central axis, the front plate configured to be retractable to a first position and extendable to a second position, the adjustable ring is attached to the slide at a first portion...