3697657

Information

• Patent Grant
• 3697657

• References
• Source

• Patent Number

  3,697,657

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1972
  53 years ago

• CPC

  • G03F9/00 - Registration or positioning of originals, masks, frames, photographic sheets or textured or patterned surfaces
  • B41C3/08 - Electrotyping Application of backing layers thereon

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes