3580447

Information

• Patent Grant
• 3580447

• References
• Source

• Patent Number

  3,580,447

• Date Filed

  Not available

• Date Issued

  Tuesday, May 25, 1971
  53 years ago

• CPC

  • D06B17/005 - in helical form
  • F26B13/006 - with movement in a spiral path
  • F26B13/101 - Supporting materials without tension

• US Classifications

  • 242 - Winding, tensioning, or guiding