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Method of making heat exchangers
US 2,749,600 A
Filed
: 02/14/1955
Issued
: 06/12/1956
Est. Priority Date
: 02/18/1954
Status: Expired due to Term
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Current Assignee
Oscar Persson
Original Assignee
Oscar Persson
Inventors
Persson, Oscar
Application Number
US03/488,090
Time in Patent Office
484 Days
Field of Search
US Class Current
29/890.045
CPC Class Codes
F28D 7/0041
the conduits for only one m...
F28F 1/36
the means being helically w...
F28F 9/0137
formed by wires, e.g. helic...
Y10T 29/49377
Tube with heat transfer means
Y10T 29/49881
of separate helix [e.g., sc...
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