3857673

Information

• Patent Grant
• 3857673

• References
• Source

• Patent Number

  3,857,673

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1974
  49 years ago

• CPC

  • B21C47/265 - "helicofil" systems
  • C21D9/563 - Rolls; Drums; Roll arrangements
  • F27B9/28 - for treating continuous lengths of work

• US Classifications

  • 432 - Heating
  • 219 - Electric heating
  • 266 - Metallurgical apparatus