Models for scientific, medical, or mathematical purposes

GPHYSICS G09Cryptography, education, displays G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE MODELS PLANETARIA GLOBES MAPS DIAGRAMS

G09B23/00Models for scientific, medical, or mathematical purposes

G09B23/02for mathematics G09B23/04for geometry, trigonometry, projection or perspective G09B23/06for physics G09B23/08for statics or dynamics G09B23/10of solid bodies G09B23/12of liquids or gases G09B23/14for acoustics G09B23/16for science of heat G09B23/18for electricity or magnetism G09B23/181for electric and magnetic fields; for voltages; for currents G09B23/182for components G09B23/183for circuits G09B23/185for building block systems G09B23/186for digital electronics; for computers G09B23/187for measuring instruments G09B23/188for motors; for generators; for power supplies; for power distribution G09B23/20for atomic physics or neucleonics G09B23/22for optics G09B23/24for chemistry G09B23/26for molecular structures for crystallography G09B23/28for medicine G09B23/281for pregnancy, birth or obstetrics G09B23/283for dentistry or oral hygiene G09B23/285for injections, endoscopy, bronchoscopy, sigmoidscopy, insertion of contraceptive devices or enemas G09B23/286for scanning or photography techniques G09B23/288for artificial respiration or heart massage G09B23/30Anatomical models G09B23/303specially adapted to simulate circulation of bodily fluids G09B23/306comprising real biological tissue G09B23/32with moving parts G09B23/34with removable parts G09B23/36for zoology G09B23/38for botany G09B23/40for geology