ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,556, issued on Sept. 29, was assigned to Neenah Foundry Co. (Neenah, Wis.).
"Manhole cover assembly" was invented by Hassan Shokouhi (Neenah, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A manhole cover assembly includes a manhole cover supportable by a seat of a manhole frame and a latch assembly. The latch assembly includes a latch housing, a latch bar, and a padlock. The latch housing is fixedly coupled to the manhole cover and defines a channel that extends through the latch housing. The latch bar is coupled to the channel and is slidable relative to the latch housing between a locked position and an unlocked position. The padlock is ope...