1777500

Information

• Patent Grant
• 1777500

• References
• Source

• Patent Number

  1,777,500

• Date Filed

  Not available

• Date Issued

  Tuesday, October 7, 1930
  94 years ago

• CPC

  • H03J1/12 - Friction drive

• US Classifications

  • 116 - Signals and indicators
  • 362 - Illumination