3648500

Information

• Patent Grant
• 3648500

• References
• Source

• Patent Number

  3,648,500

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1972
  53 years ago

• CPC

  • B21D41/02 - Enlarging
  • B21D17/04 - by rolling
  • B21D51/12 - objects with corrugated walls
  • B23D21/14 - cutting inside the tube

• US Classifications

  • 072 - Metal deforming