490475

Information

• Patent Grant
• 490475

• References
• Source

• Patent Number

  490,475

• Date Filed

  Not available

• Date Issued

  Tuesday, January 24, 1893
  132 years ago

• CPC

  • F25C1/14 - to form thin sheets which are removed by scraping or wedging
  • Y10S165/084 - Scraper within annular space formed by concentric cylinders or concentric conical surfaces

• US Classifications

  • 165 - Heat exchange
  • 062 - Refrigeration
  • 366 - Agitating