148978

Information

• Patent Grant
• 148978

• References
• Source

• Patent Number

  148,978

• Date Filed

  Not available

• Date Issued

  Tuesday, March 24, 1874
  150 years ago

• CPC

  • F28F19/008 - by using scrapers
  • Y10S165/078 - Linearly operated scraper

• US Classifications

  • 165 - Heat exchange