647204

Information

• Patent Grant
• 647204

• References
• Source

• Patent Number

  647,204

• Date Filed

  Not available

• Date Issued

  Tuesday, April 10, 1900
  124 years ago

• CPC

  • G09B29/14 - Local time charts

• US Classifications

  • 434 - Education and demonstration
  • 368 - Horology: time measuring systems or devices