1991194

Information

• Patent Grant
• 1991194

• References
• Source

• Patent Number

  1,991,194

• Date Filed

  Not available

• Date Issued

  Tuesday, February 12, 1935
  90 years ago

• CPC

  • F28D1/024 - with an air driving element
  • Y10S165/308 - Coaxial impellers
  • Y10S285/923 - Specific material

• US Classifications

  • 165 - Heat exchange
  • 285 - Pipe joints or couplings
  • 415 - Rotary kinetic fluid motors or pumps