2542490

Information

• Patent Grant
• 2542490

• References
• Source

• Patent Number

  2,542,490

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1951
  73 years ago

• CPC

  • G06G7/42 - using electrolytic tank

• US Classifications

  • 324 - Electricity: measuring and testing
  • 346 - Recorders