2178487

Information

• Patent Grant
• 2178487

• References
• Source

• Patent Number

  2,178,487

• Date Filed

  Not available

• Date Issued

  Tuesday, October 31, 1939
  85 years ago

• CPC

  • G01N25/36 - for investigating the composition of gas mixtures
  • G01N25/46 - for investigating the composition of gas mixtures

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 337 - Electricity: electrothermally or thermally actuated switches
  • 340 - Communications: electrical