3620471

Information

• Patent Grant
• 3620471

• References
• Source

• Patent Number

  3,620,471

• Date Filed

  Not available

• Date Issued

  Tuesday, November 16, 1971
  53 years ago

• CPC

  • B65H75/14 - with two end flanges
  • B65H2701/511 - essentially made of sheet material
  • B65H2701/5132 - Wooden planks or similar material
  • B65H2701/5136 - Moulded plastic elements
  • B65H2701/51522 - Wooden barrel
  • B65H2701/51524 - Paperboard barrel
  • B65H2701/51528 - Plastic barrel

• US Classifications

  • 242 - Winding, tensioning, or guiding