ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,502, issued on Oct. 14.
"Vacuum sealer" was invented by Mao-Sen Huang (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A vacuum sealer includes a housing including a front platform; a rear pumping device including two contact switches on the platform and a controller electrically to the contact switches; a pivotal presser; and a heating assembly in the platform. Either end of the heating assembly includes a U-shaped first metal member including two wings, a thermal insulation member including an internally threaded metal member through the thermal insulation member, a second metal member including a hole, a first tubular heat sink, a...