2286883

Information

• Patent Grant
• 2286883

• References
• Source

• Patent Number

  2,286,883

• Date Filed

  Not available

• Date Issued

  Tuesday, June 16, 1942
  82 years ago

• CPC

  • G03F1/88 - prepared by photographic processes for production of originals simulating relief

• US Classifications

  • 355 - Photocopying