DIFF Subgroup
B28B 3/22 by screw or worm
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Producing shaped articles from the material by using presses; Presses specially adapted therefor > wherein the material is extruded > by screw or worm
CPC:
Producing shaped articles from the material by using presses (shaping on moving conveyors B28B5/00); Presses specially adapted therefor (presses in general B30B) > wherein the material is extruded > by screw or worm
Of 4 combined children, 0 exist in both systems.
4 codes are CPC-only extensions.
Child Classifications
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