Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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B65G
TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
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33/00
Screw or rotary spiral conveyors
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B65G33/08
for fluent solid materials
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B65G33/14
comprising a screw or screws enclosed in a tubular housing
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B65G33/18
with multiple screws in parallel arrangements; , e.g. concentric
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