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PCE
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DIFF Subgroup
F04B 49/20

by changing the driving speed

Introduced: January 1995

Full Title

Full titles differ between systems:

IPC:

Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups > by changing the driving speed

CPC:

Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 > by changing the driving speed

No child classifications to compare. This is a leaf node in both IPC and CPC.