3109217

Information

• Patent Grant
• 3109217

• References
• Source

• Patent Number

  3,109,217

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1963
  61 years ago

• CPC

  • B28B7/16 - Moulds for making shaped articles with cavities or holes open to the surface
  • B28B7/34 - Moulds, cores, or mandrels of special material
  • E04B5/21 - Cross-ribbed floors
  • E04B5/326 - with hollow filling elements
  • Y10S249/02 - Paper core
  • Y10S425/106 - Chamber

• US Classifications

  • 249 - Static molds
  • 425 - Plastic article or earthenware shaping or treating: apparatus