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Drum type heat exchanger
US 2,970,812 A
Filed
: 06/14/1956
Issued
: 02/07/1961
Est. Priority Date
: 06/14/1956
Status: Expired due to Term
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Current Assignee
Richard W. Kritzer
Original Assignee
Richard W. Kritzer
Inventors
Kritzer, Richard W.
Application Number
US03/591,491
Time in Patent Office
1,699 Days
Field of Search
US Class Current
165/163
CPC Class Codes
F28D 7/04
the conduits being spirally...
Y10S 165/416
Extending transverse of she...
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