2167640

Information

• Patent Grant
• 2167640

• References
• Source

• Patent Number

  2,167,640

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1939
  85 years ago

• CPC

  • F27D3/028 - Roller rails or succession of small sized rollers

• US Classifications

  • 184 - Lubrication
  • 432 - Heating