1690243

Information

• Patent Grant
• 1690243

• References
• Source

• Patent Number

  1,690,243

• Date Filed

  Not available

• Date Issued

  Tuesday, November 6, 1928
  96 years ago

• CPC

  • C10G9/12 - Removing incrustation

• US Classifications

  • 208 - Mineral oils: processes and products
  • 134 - Cleaning and liquid contact with solids
  • 196 - Mineral oils: apparatus
  • 340 - Communications: electrical