Patent Classification Explorer PCE

DIFF Main Group

F25D 3/00

Devices using other cold materials; Devices using cold-storage bodies

Introduced: September 1968

Of 4 combined children, 3 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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F25D 3/005 CPC only CPC only
F25D 3/02 using ice, e.g. ice-boxes IPC+CPC Available in IPC and CPC
F25D 3/10 using liquefied gases, e.g. liquid air +3 CPC IPC+CPC Available in IPC and CPC
F25D 3/12 using solidified gases, e.g. carbon-dioxide snow +3 CPC IPC+CPC Available in IPC and CPC