1977394

Information

• Patent Grant
• 1977394

• References
• Source

• Patent Number

  1,977,394

• Date Filed

  Not available

• Date Issued

  Tuesday, October 16, 1934
  90 years ago

• CPC

  • G01K5/70 - specially adapted for indicating or recording
  • H01H37/06 - to facilitate replacement

• US Classifications

  • 374 - Thermal measuring and testing