1904973

Information

• Patent Grant
• 1904973

• References
• Source

• Patent Number

  1,904,973

• Date Filed

  Not available

• Date Issued

  Tuesday, April 18, 1933
  92 years ago

• CPC

  • A47L9/2842 - Suction motors or blowers
  • A47L5/30 - with driven dust-loosening tools
  • A47L9/2821 - Pressure, vacuum level or airflow
  • Y10S15/10 - Handles, reels and switches
  • Y10S15/11 - Indicators
  • Y10S55/03 - Vacuum cleaner
  • Y10S55/34 - Indicator and controllers

• US Classifications

  • 015 - Brushing, scrubbing, and general cleaning
  • 055 - Gas separation
  • 096 - Gas separation: apparatus