308529

Information

• Patent Grant
• 308529

• References
• Source

• Patent Number

  308,529

• Date Filed

  Not available

• Date Issued

  Tuesday, November 25, 1884
  139 years ago

• CPC

  • F28D11/02 - the movement being rotary
  • Y10S165/144 - Helical

• US Classifications

  • 165 - Heat exchange
  • 034 - Drying and gas or vapor contact with solids