2252807

Information

• Patent Grant
• 2252807

• References
• Source

• Patent Number

  2,252,807

• Date Filed

  Not available

• Date Issued

  Tuesday, August 19, 1941
  83 years ago

• CPC

  • C10B41/04 - by electrical means

• US Classifications

  • 414 - Material or article handling
  • 116 - Signals and indicators
  • 250 - Radiant energy