639037

Information

• Patent Grant
• 639037

• References
• Source

• Patent Number

  639,037

• Date Filed

  Not available

• Date Issued

  Tuesday, December 12, 1899
  126 years ago

• CPC

  • B29C41/14 - Dipping a core
  • B28B7/362 - specially for making moulded articles from concrete with exposed aggregate

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 106 - Compositions: coating or plastic