Assignee
SPIRAL TUBING CORP
US·5 granted patents·102 citations·filing 1976–1984
Top patents by PatentIndex Score
5 records- 0185US4171634AMethod of making corrugated tubing with graduated pitchSPIRAL TUBING CORP·Filed 1977·Granted Oct 23, 1979·43 cites·16 claims
- 0275US4424624AMultiple coil heat exchangerSPIRAL TUBING CORP·Filed 1982·Granted Jan 10, 1984·22 cites·9 claims
- 0368US4059004AMethod of forming helically corrugated tubingSPIRAL TUBING CORP·Filed 1976·Granted Nov 22, 1977·12 cites·17 claims
- 0453US4495989AMultiple coil heat exchangerSPIRAL TUBING CORP·Filed 1984·Granted Jan 29, 1985·12 cites·16 claims
- 0551US4203312ACorrugated tubing with variable depth corrugations and method of making the sameSPIRAL TUBING CORP·Filed 1978·Granted May 20, 1980·13 cites·7 claims
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