B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
26/145
B23P 15/26 (2006.01)
Patent
CA 1192728
ABSTRACT METHOD OF MAKING HEAT EXCHANGERS The method of making elongated heat exchangers having outwardly projecting fins spaced longitudinally thereof, wherein the fins are cut or gouged from a work-piece while the work-piece and cutting tool are vibrated relative to each other to afford roughened surfaces on both faces of the fins facing longitudinally of the heat exchanger.
410538
Kritzer Richard W.
Osler Hoskin & Harcourt Llp
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