3177766

Information

• Patent Grant
• 3177766

• References
• Source

• Patent Number

  3,177,766

• Date Filed

  Not available

• Date Issued

  Tuesday, April 13, 1965
  59 years ago

• CPC

  • G03B21/132 - Overhead projectors
  • Y10S353/06 - Head accessories

• US Classifications

  • 353 - Optics: image projectors