|  | G |
SECTION G — PHYSICS

INSTRUMENTS

|  | G09 |
EDUCATION; CRYPTOGRAPHY; ADVERTISING; SEALS

|  | G09B |
EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR COMMUNICATING WITH THE BLIND OR DEAF; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS (devices for psychotechnics or for testing reaction times Fulltext... Hierarchy... Expanded...A61B 5/16; games, sports, amusements Fulltext... Hierarchy... Expanded...A63; projectors, projector screens Fulltext... Hierarchy... Expanded...G03B)

|  | G09B |
Note(s) A simulator is regarded as a teaching or training device proper to this sub-class if the simulator gives perceptible sensations having a likeness to the sensations the student would experience in reality in response to actions taken by him. Simulators which demonstrate by means involving computing, the functioning of apparatus or of a system are classified in class Fulltext... Hierarchy... Expanded...G06 if no provision exists elsewhere. Simulator components which are identical with real devices or machines or components thereof are classified in the relevant sub-classes for these devices or machines and not in sub-class Fulltext... Hierarchy... Expanded...G09B. Models of buildings, installations, or the like are covered by this sub-class.

|  | G09C |
CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY (secret transmission Fulltext... Hierarchy... Expanded...H04K; arrangements for secret telegraphic communication Fulltext... Hierarchy... Expanded...H04L 9/00)

|  | G09D |
RAILWAY OR LIKE TIME OR FARE TABLES; PERPETUAL CALENDARS (calendar blocks Fulltext... Hierarchy... Expanded...B42D 5/04; clockwork-driven Fulltext... Hierarchy... Expanded...G04B; comprising computing means Fulltext... Hierarchy... Expanded...G06C)

|  | G09F |
ADVERTISING; DISPLAYING; LABELS OR NAME-PLATES; SEALS (in the nature of shop furniture Fulltext... Hierarchy... Expanded...A47F; designs or pictures characterised by special or unusual light effects, e.g. changing, Fulltext... Hierarchy... Expanded...B44F 1/00; road engineering aspects Fulltext... Hierarchy... Expanded...E01F 9/00; arrangements for giving traffic instructions Fulltext... Hierarchy... Expanded...G08G)

|  | G09F |
Note(s) This sub-class includes devices for displaying information by selecting one or more individual alphanumeric characters or other symbols or combinations thereof from a multiplicity of such characters or symbols; by selecting a combination of elements to build-up the desired character or symbol.