2157731

Information

• Patent Grant
• 2157731

• References
• Source

• Patent Number

  2,157,731

• Date Filed

  Not available

• Date Issued

  Tuesday, May 9, 1939
  85 years ago

• CPC

  • B01F15/00805 - by moving them perpendicular to the plane of the opening

• US Classifications

  • 220 - Receptacles
  • 366 - Agitating