491930

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Information

Patent Grant
491930

References
Source

Patent Number
491,930
Date Filed
Not available
Date Issued
Tuesday, February 14, 1893
132 years ago

CPC
- F28F5/02 - Rotary drums or rollers
- Y10S165/085 - Scraper for cleaning inner surface of rotary heat exchange surface
US Classifications
- 165 - Heat exchange

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