1871361

Information

• Patent Grant
• 1871361

• References
• Source

• Patent Number

  1,871,361

• Date Filed

  Not available

• Date Issued

  Tuesday, August 9, 1932
  92 years ago

• CPC

  • G01D18/00 - Testing or calibrating of apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
  • G01D9/10 - the recording element

• US Classifications

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