3074312

Information

• Patent Grant
• 3074312

• References
• Source

• Patent Number

  3,074,312

• Date Filed

  Not available

• Date Issued

  Tuesday, January 22, 1963
  62 years ago

• CPC

  • G01J1/4219 - specially adapted for enlargers

• US Classifications

  • 356 - Optics: measuring and testing
  • 250 - Radiant energy