3890042

Information

• Patent Grant
• 3890042

• References
• Source

• Patent Number

  3,890,042

• Date Filed

  Not available

• Date Issued

  Tuesday, June 17, 1975
  49 years ago

• CPC

  • G03B27/66 - specially adapted for holding half-tone screens
  • G03B15/00 - Special procedures for taking photographs Apparatus therefor
  • G03F7/2014 - Contact or film exposure of light sensitive plates such as lithographic plates or circuit boards

• US Classifications

  • 355 - Photocopying