ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,987, issued on Nov. 18, was assigned to Engineered Controls International LLC (Elon, N.C.).

"Low-profile paired relief valve" was invented by Mark Kendrick Hamm (Cullman, Ala.) and Christopher Taylor Herman (Greensboro, N.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A pressure relief valve assembly is disclosed. The pressure relief valve assembly comprises an inlet manifold, a first pressure relief valve, a second pressure relief valve, and an outlet manifold. The first pressure relief valve is connected to and in fluid communication with the inlet manifold. The second pressure relief valve is connected to and in fluid communication with the in...