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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
G05D 23/24

the sensing element having a resistance varying with temperature, e.g. a thermistor

Introduced: September 1968

Title

Titles differ between systems:

IPC: the sensing element having a resistance varying with temperature, e.g. thermistor

CPC: the sensing element having a resistance varying with temperature, e.g. a thermistor

Full Title

Full titles differ between systems:

IPC:

Control of temperature > characterised by the use of electric means > with sensing elements having variation of electric or magnetic properties with change of temperature > the sensing element having a resistance varying with temperature, e.g. thermistor

CPC:

Control of temperature > characterised by the use of electric means > with sensing elements having variation of electric or magnetic properties with change of temperature (G05D23/13 takes precedence) > the sensing element having a resistance varying with temperature, e.g. a thermistor

Of 2 combined children, 0 exist in both systems.

2 codes are CPC-only extensions.

Child Classifications

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