2139856

Information

• Patent Grant
• 2139856

• References
• Source

• Patent Number

  2,139,856

• Date Filed

  Not available

• Date Issued

  Tuesday, December 13, 1938
  85 years ago

• CPC

  • F01C20/16 - using lift valves
  • F01C20/14 - using rotating valves
  • F04C2/39 - with vanes hinged to the inner as well as to the outer member
  • F04C2/46 - with vanes hinged to the outer member

• US Classifications

  • 418 - Rotary expansible chamber devices
  • 073 - Measuring and testing