3820808

Information

• Patent Grant
• 3820808

• References
• Source

• Patent Number

  3,820,808

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • A47L5/367 - Suction cleaners for fixing on staircases
  • Y10T74/2141 - Sliding pawls

• US Classifications

  • 280 - Land vehicles
  • 015 - Brushing, scrubbing, and general cleaning
  • 188 - Brakes