1685193

Information

• Patent Grant
• 1685193

• References
• Source

• Patent Number

  1,685,193

• Date Filed

  Not available

• Date Issued

  Tuesday, September 25, 1928
  95 years ago

• CPC

  • G01K5/40 - of helical formation

• US Classifications

  • 073 - Measuring and testing
  • 374 - Thermal measuring and testing