3639056

Information

• Patent Grant
• 3639056

• References
• Source

• Patent Number

  3,639,056

• Date Filed

  Not available

• Date Issued

  Tuesday, February 1, 1972
  52 years ago

• CPC

  • G03F7/22 - Exposing sequentially with the same light pattern different positions of the same surface
  • G03B27/6214 - Copy boards

• US Classifications

  • 355 - Photocopying