CPC Subgroup
F26B 3/36 by using mechanical effects, e.g. by friction (by using ultrasonic vibrations F26B5/02)
Full Title
Drying solid materials or objects by processes involving the application of heat (in specific machines or apparatus F26B9/00 - F26B19/00) > by development of heat within the materials or objects to be dried > by using mechanical effects, e.g. by friction (by using ultrasonic vibrations F26B5/02)