2356464

Information

• Patent Grant
• 2356464

• References
• Source

• Patent Number

  2,356,464

• Date Filed

  Not available

• Date Issued

  Tuesday, August 22, 1944
  80 years ago

• CPC

  • G01J1/4219 - specially adapted for enlargers

• US Classifications

  • 355 - Photocopying
  • 352 - Optics: motion pictures
  • 356 - Optics: measuring and testing