417634

Information

• Patent Grant
• 417634

• References
• Source

• Patent Number

  417,634

• Date Filed

  Not available

• Date Issued

  Tuesday, December 17, 1889
  135 years ago

• CPC

  • C04B7/3456 - Alinite cements

• US Classifications

  • 106 - Compositions: coating or plastic
  • 051 - Abrasive tool making process, material, or composition