2282337

Information

• Patent Grant
• 2282337

• References
• Source

• Patent Number

  2,282,337

• Date Filed

  Not available

• Date Issued

  Tuesday, May 12, 1942
  82 years ago

• CPC

  • G03F5/04 - changing the screen effect

• US Classifications

  • 355 - Photocopying
  • 396 - Photography