B81B

MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES (piezoelectric, electrostrictive or magnetostrictive elements per se H10N 30/00, H10N 35/00)[7]

Note(s) This subclass does not cover:[7] purely electrical or electronic devices per se which are covered by section H, e.g. subclass H01L or class H10;purely optical devices per se which are covered by subclasses G02B or G02F;essentially two-dimensional structures, e.g. layered products which are covered by subclass B32B;chemical or biological structures per se which are covered by section C;structures in atomic scale produced by manipulation of single atoms or molecules, which are covered by group B82B 1/00. Devices or systems classified in this subclass are also classified in appropriate subclasses providing for their structural or functional features, if such features are of interest.