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3612175
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Information
Patent Grant
3612175
References
Source
Patent Number
3,612,175
Date Filed
Not available
Date Issued
Tuesday, October 12, 1971
53 years ago
CPC
F28F21/08 - of metal
F28F1/36 - the means being helically wound fins or wire spirals
F28F1/42 - the means being both outside and inside the tubular element
Y10S165/535 - Helically formed
US Classifications
165 - Heat exchange
138 - Pipes and tubular conduits
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