1212840

Information

• Patent Grant
• 1212840

• References
• Source

• Patent Number

  1,212,840

• Date Filed

  Not available

• Date Issued

  Tuesday, January 16, 1917
  108 years ago

• CPC

  • C04B28/04 - Portland cements
  • Y10S425/111 - Hollow block

• US Classifications

  • 106 - Compositions: coating or plastic
  • 425 - Plastic article or earthenware shaping or treating: apparatus