3723747

Information

• Patent Grant
• 3723747

• References
• Source

• Patent Number

  3,723,747

• Date Filed

  Not available

• Date Issued

  Tuesday, March 27, 1973
  51 years ago

• CPC

  • G08B17/107 - for detecting light-scattering due to smoke
  • G01N21/53 - within a flowing fluid
  • G08B17/113 - Constructional details
  • G01N2201/0639 - Sphere lens

• US Classifications

  • 250 - Radiant energy
  • 340 - Communications: electrical
  • 356 - Optics: measuring and testing