ALEXANDRIA, Va., Nov. 6 -- United States Patent no. D1,101,316, issued on Nov. 4, was assigned to CHANGZHOU CANBO TRAVEL PRODUCTS Co. LTD. (Changzhou, China).

"Pet ladder" was invented by Huafeng Yun (Changzhou, China).

The patent was filed on March 31, 2023, under Application No. D/873,502.

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