ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,564, issued on April 15.

"Fixture and method for determining the center of gravity of a remote controlled aircraft" was invented by Michael Matteson (Macedon, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device for determining the center of gravity (CG) of a remote controlled aircraft includes a base member having a slotted track defined therein and a plurality of support platforms mounted on the base member. Each support platform of the plurality of support platforms is slidably positionable along the slotted track and each support platform may receive a digital CG sensor thereon. A plurality of leveling members is also mounted on the base ...