1336857

Information

• Patent Grant
• 1336857

• References
• Source

• Patent Number

  1,336,857

• Date Filed

  Not available

• Date Issued

  Tuesday, April 13, 1920
  104 years ago

• CPC

  • B28B21/18 - using expansible or retractable mould or core elements

• US Classifications

  • 249 - Static molds