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Method of manufacturing heat exchanger sections
US 2,686,957 A
Filed
: 08/17/1951
Issued
: 08/24/1954
Est. Priority Date
: 08/17/1951
Status: Expired due to Term
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Current Assignee
Erhardt C. Koerper
Original Assignee
Erhardt C. Koerper
Inventors
Koerper, Erhardt C.
Application Number
US03/242,280
Time in Patent Office
1,103 Days
Field of Search
US Class Current
29/890.044
CPC Class Codes
B21D 53/08
of both metal tubes and she...
F28D 1/05383
with multiple rows of condu...
F28F 1/126
consisting of zig-zag shape...
F28F 9/16
by permanent joints, e.g. b...
Y10T 29/49375
including conduit expansion...
Y10T 29/4938
Common fin traverses plural...
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