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1911197
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Information
Patent Grant
1911197
References
Source
Patent Number
1,911,197
Date Filed
Not available
Date Issued
Tuesday, May 30, 1933
91 years ago
CPC
F28D1/0477 - the conduits being bent in a serpentine or zig-zag
Y10S165/335 - Plural air draft passages enclosed by casing
US Classifications
165 - Heat exchange
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