1729450

Information

• Patent Grant
• 1729450

• References
• Source

• Patent Number

  1,729,450

• Date Filed

  Not available

• Date Issued

  Tuesday, September 24, 1929
  95 years ago

• CPC

  • H01J13/14 - Cooling, heating, circulating, filtering, or controlling level of the liquid
  • H01J2893/0082 - Returning condensed electrode material to the cathodic cup

• US Classifications

  • 313 - Electric lamp and discharge devices