3449937

Information

• Patent Grant
• 3449937

• References
• Source

• Patent Number

  3,449,937

• Date Filed

  Not available

• Date Issued

  Tuesday, June 17, 1969
  55 years ago

• CPC

  • B21J5/08 - Upsetting
  • B21K1/14 - fittings
  • B21K21/08 - Shaping hollow articles with different cross-section in longitudinal direction
  • F02M55/005 - for high pressure conduits

• US Classifications

  • 072 - Metal deforming
  • 138 - Pipes and tubular conduits