B21L 3/04

Sub-Class

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Description

Class  B21L : MAKING CHAINS


Subclass 3/04: 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 by making use of forge or pressure welding

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
6068568 Silent chainNov 20, 97May 30, 00TSUBAKIMOTO CHAIN CO.

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