2169086

Information

• Patent Grant
• 2169086

• References
• Source

• Patent Number

  2,169,086

• Date Filed

  Not available

• Date Issued

  Tuesday, August 8, 1939
  85 years ago

• CPC

  • F22B37/165 - Closures for access openings in return bends

• US Classifications

  • 196 - Mineral oils: apparatus
  • 122 - Liquid heaters and vaporizers