2284024

Information

• Patent Grant
• 2284024

• References
• Source

• Patent Number

  2,284,024

• Date Filed

  Not available

• Date Issued

  Tuesday, May 26, 1942
  82 years ago

• CPC

  • H04L15/20 - with optical sensing means

• US Classifications

  • 178 - Telegraphy
  • 250 - Radiant energy
  • 359 - Optical: systems and elements