695606

Information

• Patent Grant
• 695606

• References
• Source

• Patent Number

  695,606

• Date Filed

  Not available

• Date Issued

  Tuesday, March 18, 1902
  123 years ago

• CPC

  • G02B3/14 - of variable focal length
  • Y10S116/15 - Projection

• US Classifications

  • 359 - Optical: systems and elements
  • 116 - Signals and indicators