1975065

Information

• Patent Grant
• 1975065

• References
• Source

• Patent Number

  1,975,065

• Date Filed

  Not available

• Date Issued

  Tuesday, September 25, 1934
  90 years ago

• CPC

  • G01R13/12 - Chemical recording

• US Classifications

  • 324 - Electricity: measuring and testing
  • 340 - Communications: electrical