B21F 3/12

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
2025/0009,360 DYNAMIC MANDREL FOR INDUCING STRESS INTO AN EMBOLIC COILSep 19, 24Jan 09, 25Not available
2014/0219,713 COIL SPRINGS WITH COMPLEX COIL CONFIGURATIONS, ASSEMBLIES WITH COIL SPRINGS, AND RELATED METHODSJan 27, 14Aug 07, 14BAL SEAL ENGINEERING, INC.
2008/0257,003 Apparatus for the Production of Wire SpringsMay 30, 05Oct 23, 08Mollificio Bordignon S.R.L.