US Patent Issued to Hebei Fenger Intelligent Technology on June 17 for "Multi-functional double-layer crisper" (Chinese Inventors)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,990, issued on June 17, was assigned to Hebei Fenger Intelligent Technology Co. Ltd (Shijiazhuang, China).

"Multi-functional double-layer crisper" was invented by Jianzhong Zhang (Handan, China) and Xiaojia Liu (Handan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a multi-functional double-layer crisper, comprising a bottom box body, a sandwich box body and a cover body; the edge of the opening end of the bottom box body is protruded outwards to form an annular flange; the edge of the bottom end of the sandwich box body is protruded outwards to form an annular clamp plate which is hermetically abutted with th...