| http://www.w3.org/ns/prov#value | - Maguire SHEET 2 OF 3 PATENTEU JUL27 l97| HJHTJ R N MD I HIM/(1N5 In van (or A llom sy HEAT EXCHANGER WITH HELICALLY COILED TUBES BACKGROUND AND SUMMARY OF THE INVENTION This invention relates to heat exchangers and is particularly concerned with heat exchangers containing a bank of tubes in the form ofa plurality of concentric helices.
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