1639876

Information

• Patent Grant
• 1639876

• References
• Source

• Patent Number

  1,639,876

• Date Filed

  Not available

• Date Issued

  Tuesday, August 23, 1927
  99 years ago

• CPC

  • A47L5/06 - with rotary fans

• US Classifications

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