1981266

Information

• Patent Grant
• 1981266

• References
• Source

• Patent Number

  1,981,266

• Date Filed

  Not available

• Date Issued

  Tuesday, November 20, 1934
  91 years ago

• CPC

  • G01R13/04 - for producing permanent records
  • G01R13/14 - Recording on a light-sensitive material

• US Classifications

  • 324 - Electricity: measuring and testing