3315509

Information

• Patent Grant
• 3315509

• References
• Source

• Patent Number

  3,315,509

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1967
  57 years ago

• CPC

  • B21F3/06 - internally on a hollow form
  • B21C37/12 - Making tubes or metal hoses with helically arranged seams

• US Classifications

  • 072 - Metal deforming