ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,500, issued on June 17, was assigned to Danxuan Ding (Ningbo, China).
"Two-waterway structure for faucet" was invented by Danxuan Ding (Ningbo, China) and Qiquan Zhang (Ningbo, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A two-waterway structure for a faucet that includes: a first pipe, which is configured for water intake; a second pipe, which is configured for water intake and is provided with a manual switch configured to control the connection and disconnection of waterway in the second pipe; and a water outlet pipe, which is configured for water output, an end portion of the first pipe and an end portion of the second pipe being both c...