3640478

Information

• Patent Grant
• 3640478

• References
• Source

• Patent Number

  3,640,478

• Date Filed

  Not available

• Date Issued

  Tuesday, February 8, 1972
  52 years ago

• CPC

  • B65H54/2842 - grooved, slotted, or split drums
  • B65H59/384 - using electronic means
  • B65H2701/31 - Textiles threads or artificial strands of filaments

• US Classifications

  • 242 - Winding, tensioning, or guiding