B - Operations – Transporting – 28 – B
Inventor
B - Operations, Transporting
28
B
Inventor
Concrete extrusion machine and spiral conveyor therefor
Extrusion machine for making articles of cement-like material
Machine for extruding cement-like material into articles
Machine for extruding hollow cored concrete sections
Concrete extrusion machine and spiral conveyor therefor
Extrusion machine for making articles of cement-like material
Machine for extruding hollow cored concrete sections
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