3525566

Information

• Patent Grant
• 3525566

• References
• Source

• Patent Number

  3,525,566

• Date Filed

  Not available

• Date Issued

  Tuesday, August 25, 1970
  54 years ago

• CPC

  • G03B21/132 - Overhead projectors
  • G03B21/20 - Lamp houses
  • Y10S353/04 - Opaque
  • Y10S353/05 - Transparency holder accessories

• US Classifications

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