1399923

Information

• Patent Grant
• 1399923

• References
• Source

• Patent Number

  1,399,923

• Date Filed

  Not available

• Date Issued

  Tuesday, December 13, 1921
  103 years ago

• CPC

  • G09F13/16 - Signs formed of or incorporating reflecting elements or surfaces
  • Y10S116/24 - with suction cups

• US Classifications

  • 359 - Optical: systems and elements
  • 040 - Card, picture, or sign exhibiting
  • 116 - Signals and indicators