3813189

Information

• Patent Grant
• 3813189

• References
• Source

• Patent Number

  3,813,189

• Date Filed

  Not available

• Date Issued

  Tuesday, May 28, 1974
  50 years ago

• CPC

  • F01C20/22 - by changing the eccentricity between cooperating members

• US Classifications

  • 417 - Pumps