2881501

Information

• Patent Grant
• 2881501

• References
• Source

• Patent Number

  2,881,501

• Date Filed

  Not available

• Date Issued

  Tuesday, April 14, 1959
  65 years ago

• CPC

  • E04G11/46 - of hat-like or trough-like shape encasing a rib or the section between two ribs or encasing one rib and its adjacent flat floor or ceiling section
  • Y10S249/02 - Paper core
  • Y10S264/44 - using destructible molds or cores in molding processes
  • Y10S425/029 - Jigs and dies

• US Classifications

  • 249 - Static molds
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 425 - Plastic article or earthenware shaping or treating: apparatus
  • 493 - Manufacturing container or tube from paper