2399173

Information

• Patent Grant
• 2399173

• References
• Source

• Patent Number

  2,399,173

• Date Filed

  Not available

• Date Issued

  Tuesday, April 30, 1946
  78 years ago

• CPC

  • B61L5/1818 - using mobile coloured screen

• US Classifications

  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets