ALEXANDRIA, Va., March 19 -- United States Patent no. D1,067,551, issued on March 18, was assigned to PurrSong Inc. (Daejeon, South Korea).
"Pet litter box" was invented by Tae Gu Noh (Suwon-si, South Korea), Young Kyun Koh (Seoul, South Korea) and Chang Hyeon Bak (Seoul, South Korea).
The patent was filed on June 29, 2022, under Application No. D/844,446.
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