3472720

Information

• Patent Grant
• 3472720

• References
• Source

• Patent Number

  3,472,720

• Date Filed

  Not available

• Date Issued

  Tuesday, October 14, 1969
  55 years ago

• CPC

  • D21J1/00 - Fibreboard
  • Y10T428/24355 - Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
  • Y10T428/26 - Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
  • Y10T428/31652 - Of asbestos
  • Y10T428/31819 - Next to cellulosic
  • Y10T442/51 - From natural organic fiber [e.g., wool, etc.]

• US Classifications

  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 428 - Stock material or miscellaneous articles
  • 442 - Fabric