3203639

Information

• Patent Grant
• 3203639

• References
• Source

• Patent Number

  3,203,639

• Date Filed

  Not available

• Date Issued

  Tuesday, August 31, 1965
  59 years ago

• CPC

  • B21C47/265 - "helicofil" systems

• US Classifications

  • 242 - Winding, tensioning, or guiding