by using presses

Full Title

Apparatus or processes for treating or working the shaped articles > for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads > by using presses

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

WORKING CEMENT, CLAY, OR STONE

Subclass:

SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER