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445072
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Information
Patent Grant
445072
References
Source
Patent Number
445,072
Date Filed
Not available
Date Issued
Tuesday, January 20, 1891
133 years ago
CPC
B29C47/84 - Heating or cooling the screws
B29C47/0009 - characterised by the shape of the articles
F28F5/06 - Hollow screw conveyors
Y10S165/081 - Rotary heat exchange scraper or scraper for rotary heat exchange surface
US Classifications
165 - Heat exchange
062 - Refrigeration
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