DIFF Subgroup
F25C 3/04 for sledging or ski trails; Producing artificial snow
Introduced: September 1968
Full Title
Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow > for sledging or ski trails; Producing artificial snow
No child classifications to compare. This is a leaf node in both IPC and CPC.