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PCE
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DIFF Subgroup
F25B 21/02

using Peltier effect; using Nernst-Ettinghausen effect

Introduced: September 1968

Full Title

Machines, plants or systems, using electric or magnetic effects > using Peltier effect; using Nernst-Ettinghausen effect

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

IPC defines codes here since 1990.

Child Classifications

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  • F25B 21/04 reversible since 1990 IPC+CPC Available in IPC and CPC