1520086

Information

• Patent Grant
• 1520086

• References
• Source

• Patent Number

  1,520,086

• Date Filed

  Not available

• Date Issued

  Tuesday, December 23, 1924
  100 years ago

• CPC

  • G01N7/10 - by allowing diffusion of components through a porous wall and measuring a pressure or volume difference
  • Y10S200/16 - Gas detector

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 340 - Communications: electrical