DIFF Subgroup
F28D 11/02 the movement being rotary, e.g. performed by a drum or roller (F28D11/08 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: the movement being rotary, e.g. performed by a drum or roller
CPC: the movement being rotary, e.g. performed by a drum or roller (F28D11/08 takes precedence)
Full Title
Full titles differ between systems:
IPC:
Heat-exchange apparatus employing moving conduits > the movement being rotary, e.g. performed by a drum or roller
CPC:
Heat-exchange apparatus employing moving conduits > the movement being rotary, e.g. performed by a drum or roller (F28D11/08 takes precedence)
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
Navigate with arrow keys, Enter to open