3644041

Information

• Patent Grant
• 3644041

• References
• Source

• Patent Number

  3,644,041

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1972
  53 years ago

• CPC

  • A41H3/02 - Making patterns by copying
  • G03B27/02 - Exposure apparatus for contact printing

• US Classifications

  • 355 - Photocopying