with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces

Full Title

Filters with filtering elements which move during the filtering operation > with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Subclass:

SEPARATION