ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,070, issued on Feb. 10, was assigned to DELTA SCIENTIFIC Corp. (Palmdale, Calif.).
"Portable barricade and portable barricade system" was invented by Harry D. Dickinson (La Canada Flintridge, Calif.), David G. Dickinson (La Canada Flintridge, Calif.), James John Burnett (Canyon Country, Calif.) and Judy L. Manor (Lancaster, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A portable barricade includes a road plate, first and second support posts extending upward from end portions of the road plate, a barricade arm extending between the first and second support posts, and a lift coupled one of the end portions of the barricade arm and a correspo...