ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,194, issued on Aug. 4.
"Fill-level indicator for liquid containers" was invented by Ronald George Mindzak (Mercerville, N.J.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A removable fill-level indicator device for use with a liquid container is disclosed. The device includes a stop member configured to rest on a portion of an opening of the container and a recessed portion that permits introduction of liquid into the container while the device is in place. A buoyant member is positioned below the stop member and is operatively coupled to the stop member. As liquid is introduced into the container, the buoyant member rises in response to the increas...