2094689

Information

• Patent Grant
• 2094689

• References
• Source

• Patent Number

  2,094,689

• Date Filed

  Not available

• Date Issued

  Tuesday, October 5, 1937
  87 years ago

• CPC

  • B61L5/1845 - Optical systems, lenses

• US Classifications

  • 340 - Communications: electrical
  • 362 - Illumination