ALEXANDRIA, Va., March 3 -- United States Patent no. 12,566,098, issued on March 3, was assigned to VAPOR PRODUCTS GROUP LLC (Troy, Mich.).

"Sub-slab monitor, system, and method of using the same" was invented by Kyle Hoylman (Louisville, Ky.), Chris Bonniwell (Louisville, Ky.) and Chris Ferguson (Louisville, Ky.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sub-slab monitor includes a housing configured to extend through a foundation such that an upper surface of the housing is in contact with an indoor air environment and a lower surface of the housing is in contact with a sub-slab environment. The housing includes an upper end cap, a lower end cap, a body extending between the upper end cap and the low...