ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,813, issued on Aug. 5, was assigned to Assa Abloy Entrance Systems AB (Landskrona, Sweden).
"Revolving door for providing a passage way through a building wall and a method of operating the revolving door" was invented by Roger Dreyer (Bjarred, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "ASSA ABLOY Entrance Systems AB has developed a revolving door (1) for providing a passage way through abuilding wall (2), the revolving door (1) comprising: a wall structure (3) arranged in the building wall (2), the wall structure (3) comprising a first side wall section (8), a second side wall section (9), a floor section (10) and a ceiling section (11); ...