Assignee

UNIVERSAL SPIRALWELD

US·2 granted patents·29 citations·filing 1983–1983

Technology mixB21C2 B23K2 B63B2 F16L2 Y10T1

Top patents by PatentIndex Score

2 records

0178US4509447AHelical seamed structural vessel and method of forming sameUNIVERSAL SPIRALWELD·Filed 1983·Granted Apr 9, 1985·27 cites·8 claims
0231US4485756AHelical seam structural vessel, method and apparatus of forming sameUNIVERSAL SPIRALWELD·Filed 1983·Granted Dec 4, 1984·2 cites·4 claims

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