2153456

Information

• Patent Grant
• 2153456

• References
• Source

• Patent Number

  2,153,456

• Date Filed

  Not available

• Date Issued

  Tuesday, April 4, 1939
  85 years ago

• CPC

  • G01J1/54 - by observing photo-reactions between gases

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 250 - Radiant energy
  • 429 - Chemistry: electrical current producing apparatus, product, and process