1891705

Information

• Patent Grant
• 1891705

• References
• Source

• Patent Number

  1,891,705

• Date Filed

  Not available

• Date Issued

  Tuesday, December 20, 1932
  92 years ago

• CPC

  • F28G3/10 - having scrapers, hammers, or cutters
  • Y10S159/13 - Scale
  • Y10S165/081 - Rotary heat exchange scraper or scraper for rotary heat exchange surface

• US Classifications

  • 165 - Heat exchange
  • 015 - Brushing, scrubbing, and general cleaning
  • 034 - Drying and gas or vapor contact with solids
  • 122 - Liquid heaters and vaporizers
  • 159 - Concentrating evaporators