1800239

Information

• Patent Grant
• 1800239

• References
• Source

• Patent Number

  1,800,239

• Date Filed

  Not available

• Date Issued

  Tuesday, April 14, 1931
  93 years ago

• CPC

  • C01G21/10 - Red lead (Pb3O4)
  • Y02P20/129 - Energy recovery

• US Classifications

  • 423 - Chemistry of inorganic compounds
  • 422 - Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing