|  | G |
SECTION G — PHYSICS

INSTRUMENTS

|  | G08 |
SIGNALLING (indicating or display devices per se Fulltext... Hierarchy... Expanded...G09F; transmission of pictures Fulltext... Hierarchy... Expanded...H04N; arrangements for selective calling from one station to another Fulltext... Hierarchy... Expanded...H04Q 9/00)

|  | G08B |
SIGNALLING OR CALLING ARRANGEMENTS; ALARM ARRANGEMENTS (signalling arrangements on vehicles Fulltext... Hierarchy... Expanded...B60Q, Fulltext... Hierarchy... Expanded...B62D 41/00; railway signalling systems or devices Fulltext... Hierarchy... Expanded...B61L; on cycles Fulltext... Hierarchy... Expanded...B62J 3/00, Fulltext... Hierarchy... Expanded...B62J 5/00; signalling or alarm devices in mines Fulltext... Hierarchy... Expanded...E21F 17/18; lamps and shutters therefor Fulltext... Hierarchy... Expanded...F21; sensitive measuring elements, see the appropriate sub-classes of Fulltext... Hierarchy... Expanded...G01; digital signal transmission system Fulltext... Hierarchy... Expanded...G08C; traffic control systems Fulltext... Hierarchy... Expanded...G08G; visual indicating means Fulltext... Hierarchy... Expanded...G09; sound-producing devices Fulltext... Hierarchy... Expanded...G10, Fulltext... Hierarchy... Expanded...H04R; radio or near-field calling-systems Fulltext... Hierarchy... Expanded...H04B; arrangements for selective calling from one station to another Fulltext... Hierarchy... Expanded...H04Q 9/00)

|  | G08B |
Note(s) The term "arrangements" may cover also devices peculiar thereto. The mere provision of an audible or visible signalling device on measuring or switching apparatus is not included. This sub-class includes also means for identifying or incapacitating burglars or the like. Alarm arrangements for indicating that a specific variable has exceeded, or fallen below, a predetermined value are classified in the relevant sub-classes of class Fulltext... Hierarchy... Expanded...G01 for the measurement of that variable. Alarms for specific processes or types of machines or apparatus are classified in the relevant sub-classes for the processes, machines, or apparatus.

|  | G08C |
SIGNAL TRANSMISSION SYSTEMS (hydraulic transmission systems Fulltext... Hierarchy... Expanded...F15B; transducers for specific physical variables, see the relevant sub-classes, e.g. of Fulltext... Hierarchy... Expanded...G01, of Fulltext... Hierarchy... Expanded...H01; indicators or recorders, see the relevant sub-classes, e.g. Fulltext... Hierarchy... Expanded...G01D, Fulltext... Hierarchy... Expanded...G09F; arrangements for transmission of measured values Fulltext... Hierarchy... Expanded...G01D 5/00; self-balancing bridges Fulltext... Hierarchy... Expanded...G01R; mechanical control systems Fulltext... Hierarchy... Expanded...G05G; systems for transmitting "on/off" signals only, systems for transmitting alarm conditions Fulltext... Hierarchy... Expanded...G08B; non-electric order telegraph systems Fulltext... Hierarchy... Expanded...G08B 9/00; generating, coding or decoding electric pulses Fulltext... Hierarchy... Expanded...H03K; radio or line transmission systems in general Fulltext... Hierarchy... Expanded...H04B; telegraph systems Fulltext... Hierarchy... Expanded...H04L; selective calling from one station to another Fulltext... Hierarchy... Expanded...H04Q 9/00)

|  | G08C |
Note(s) This sub-class deals only with systems for transmitting values of a variable, in which the parameter used for the transmission differs from that of the variable

|  | G08G |
TRAFFIC CONTROL SYSTEMS (road engineering aspects Fulltext... Hierarchy... Expanded...E01F 9/00; mounting of detectors in or on roads Fulltext... Hierarchy... Expanded...E01F 11/00)

|  | G08G |
Note(s) This sub-class includes: identification of traffic offenders; indication of the position of scheduled vehicles; indication of free spaces in parking areas.