1556820

Information

• Patent Grant
• 1556820

• References
• Source

• Patent Number

  1,556,820

• Date Filed

  Not available

• Date Issued

  Tuesday, October 13, 1925
  99 years ago

• CPC

  • C01G21/10 - Red lead (Pb3O4)

• US Classifications

  • 423 - Chemistry of inorganic compounds