3789861

Information

• Patent Grant
• 3789861

• References
• Source

• Patent Number

  3,789,861

• Date Filed

  Not available

• Date Issued

  Tuesday, February 5, 1974
  50 years ago

• CPC

  • F16K21/04 - Self-closing valves
  • B08B9/0328 - by purging the pipe with a gas or a mixture of gas and liquid
  • B08B2209/024 - by creating a shock wave in the cleaning liquid
  • F16L2101/12 - Cleaning

• US Classifications

  • 134 - Cleaning and liquid contact with solids
  • 015 - Brushing, scrubbing, and general cleaning
  • 222 - Dispensing