ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,543,661, issued on Feb. 10, was assigned to GENTLE GREEN B.V. (Naaldwijk, Netherlands).

"Greenhouse" was invented by Hlodver Por Olafsson (Welwyn, Great Britain) and Arnoud Nicolaas Tieleman (Champfromier, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "Greenhouse, comprising a substantially airtight enclosure having an interior space, comprising a crop space in which crops are to be grown, and a climate control chamber configured to control a climate in the crop space, comprising at least one air inlet opening and at least one air outlet opening through which an interior of the chamber is in fluid communication with the crop space, an air displac...