B21L

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Description

MAKING CHAINS (making chains or chain links by casting B22D 25/02; chains in general F16G)

Subclasses

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Subclass Title
1/00 Making chains or chain links by bending workpieces of rod, wire, or strip to form links of oval or other simple shape (B21L 3/00, B21L 7/00 take precedence)
1/02 Making chains or chain links by bending workpieces of rod, wire, or strip to form links of oval or other simple shape (B21L 3/00, B21L 7/00 take precedence) by bending the ends of the workpieces to abut
1/04 Making chains or chain links by bending workpieces of rod, wire, or strip to form links of oval or other simple shape (B21L 3/00, B21L 7/00 take precedence) by bending and interconnecting the ends of the workpieces with or without separate jointing members
3/00 Making chains or chain links by bending the chain links or link parts and subsequently welding or soldering the abutting ends (B21L 7/00 takes precedence)
3/02 Making chains or chain links by bending the chain links or link parts and subsequently welding or soldering the abutting ends (B21L 7/00 takes precedence) Machines or devices for welding chain links

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Recent Publications

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Patents Issued To Date - By Filing Year

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