3880221

Information

• Patent Grant
• 3880221

• References
• Source

• Patent Number

  3,880,221

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1975
  49 years ago

• CPC

  • B22D1/005 - Injection assemblies therefor
  • B22D11/117 - by treating with gases
  • C21C7/0081 - Treating and handling under pressure

• US Classifications

  • 164 - Metal founding