The USPTO has issued a new classification order, #1878, covering changes to Classes 16, Miscellaneous Hardware, and 52, Static Structures (Buildings). Static structures include all types of constructions ranging from amusement park rides and sports stadiums to wind turbines and gravestones. The principal changes in Class 52 affect subclasses related to beams, columns, girders, shafts, reinforcing bars and rods. As of July 1, there are approximately 92,500 patents and 10,600 published applications classified in Class 52.