3821922

Information

• Patent Grant
• 3821922

• References
• Source

• Patent Number

  3,821,922

• Date Filed

  Not available

• Date Issued

  Tuesday, July 2, 1974
  50 years ago

• CPC

  • F16L37/46 - with a gate valve or sliding valve
  • F16L37/367 - with two gate valves or sliding valves
  • F16L37/56 - for double-walled or multi-channel pipes or pipe assemblies

• US Classifications

  • 091 - Motors: expansible chamber type
  • 417 - Pumps