3778142

Information

• Patent Grant
• 3778142

• References
• Source

• Patent Number

  3,778,142

• Date Filed

  Not available

• Date Issued

  Tuesday, December 11, 1973
  52 years ago

• CPC

  • G03F7/34 - Imagewise removal by selective transfer
  • B29D11/00615 - moulded by partially embedding reflective elements
  • B41M3/003 - on optical devices
  • G02B5/128 - transparent spheres being embedded in matrix
  • G02B21/0016 - Technical microscopes
  • G03B21/06 - affording only episcopic projection
  • G03B21/08 - affording epidiascopic projection
  • G03B21/132 - Overhead projectors
  • G03B27/04 - Copying apparatus without a relative movement between the original and the light source during exposure
  • G03F1/14 - Originals characterised by structural details

• US Classifications

  • 353 - Optics: image projectors
  • 359 - Optical: systems and elements