3870437

Information

• Patent Grant
• 3870437

• References
• Source

• Patent Number

  3,870,437

• Date Filed

  Not available

• Date Issued

  Tuesday, March 11, 1975
  50 years ago

• CPC

  • F04C5/00 - Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable
  • F04B43/0027 - without valves

• US Classifications

  • 417 - Pumps
  • 418 - Rotary expansible chamber devices