1677965

Information

• Patent Grant
• 1677965

• References
• Source

• Patent Number

  1,677,965

• Date Filed

  Not available

• Date Issued

  Tuesday, July 24, 1928
  96 years ago

• CPC

  • G03F1/88 - prepared by photographic processes for production of originals simulating relief
  • G03F1/00 - Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles Mask blanks or pellicles therefor Containers specially adapted therefor Preparation thereof

• US Classifications

  • 355 - Photocopying