2701838

Information

• Patent Grant
• 2701838

• References
• Source

• Patent Number

  2,701,838

• Date Filed

  Not available

• Date Issued

  Tuesday, February 8, 1955
  69 years ago

• CPC

  • B43L5/007 - drawing copying devices using a transparency

• US Classifications

  • 362 - Illumination
  • 315 - Electric lamp and discharge devices: systems