2202223

Information

• Patent Grant
• 2202223

• References
• Source

• Patent Number

  2,202,223

• Date Filed

  Not available

• Date Issued

  Tuesday, May 28, 1940
  84 years ago

• CPC

  • A47L11/4033 - Means for cleaning filters
  • A47L11/30 - by suction
  • A47L11/4011 - Regulation of the cleaning machine by electric means; Control systems and remote control systems therefor
  • A47L11/4019 - Fill level sensors; Security means to prevent overflow
  • A47L11/4027 - Filtering or separating contaminants or debris
  • E02D19/10 - by lowering level of ground water
  • Y10T137/7323 - By float
  • Y10T137/7436 - Float rigid with valve
  • Y10T137/86759 - Reciprocating

• US Classifications

  • 210 - Liquid purification or separation
  • 137 - Fluid handling