CPC Subgroup
G01H 3/06 by electric means
Full Title
Measuring vibrations by using a detector in a fluid (G01H7/00, G01H9/00, G01H11/00 take precedence) > Frequency > by electric means
G01H 3/06 Measuring vibrations by using a detector in a fluid (G01H7/00, G01H9/00, G01H11/00 take precedence) > Frequency > by electric means