ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,724, issued on Oct. 14, was assigned to Q.E.D. Environmental Systems Inc. (Dexter, Mich.).

"Soil sampler" was invented by Mark T. Weinberger (Mounds View, Minn.), David B. Kaminski (Clayton, Calif.), Daniel O. Hayes (Howell, Mich.) and Hunter C. Anstadt (Ann Arbor, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A soil sampler includes a base and a plunger insertable into the base. The depth in which the plunger is inserted into the base determines the size of the sample collected by the soil sampler. The depth in which the plunger is inserted into the base can switch between a first size and a second size, allowing the user to collect differen...