ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,210,130, issued on Jan. 28, was assigned to SEESCAN INC. (San Diego).

"Electromagnetic marker devices for buried or hidden use" was invented by Stephanie M. Bench (Atlanta), Mark S. Olsson (La Jolla, Calif.) and Matthew D. Bockman (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to electromagnetic marker devices for locating hidden or buried objects. One embodiment includes an antenna having a plurality of conductive windings enclosed in a housing made of a low dielectric constant material and an electronic circuit including a circuit board having circuit elements disposed thereon and electrically coupled to the c...