1991859

Information

• Patent Grant
• 1991859

• References
• Source

• Patent Number

  1,991,859

• Date Filed

  Not available

• Date Issued

  Tuesday, February 19, 1935
  89 years ago

• CPC

  • A47L9/108 - Dust compression means
  • A47L9/19 - Means for monitoring filtering operation
  • Y10S15/08 - Dust bags and separators
  • Y10S15/11 - Indicators
  • Y10S55/34 - Indicator and controllers

• US Classifications

  • 096 - Gas separation: apparatus
  • 015 - Brushing, scrubbing, and general cleaning
  • 055 - Gas separation
  • 116 - Signals and indicators
  • 417 - Pumps