3191491

Information

• Patent Grant
• 3191491

• References
• Source

• Patent Number

  3,191,491

• Date Filed

  Not available

• Date Issued

  Tuesday, June 29, 1965
  59 years ago

• CPC

  • G03B21/132 - Overhead projectors
  • Y10S353/03 - Transparent
  • Y10S353/06 - Head accessories

• US Classifications

  • 353 - Optics: image projectors