1362281

Information

• Patent Grant
• 1362281

• References
• Source

• Patent Number

  1,362,281

• Date Filed

  Not available

• Date Issued

  Tuesday, December 14, 1920
  104 years ago

• CPC

  • G01J5/605 - using visual determination

• US Classifications

  • 356 - Optics: measuring and testing
  • 324 - Electricity: measuring and testing
  • 359 - Optical: systems and elements