2418756

Information

• Patent Grant
• 2418756

• References
• Source

• Patent Number

  2,418,756

• Date Filed

  Not available

• Date Issued

  Tuesday, April 8, 1947
  77 years ago

• CPC

  • G09B29/14 - Local time charts

• US Classifications

  • 434 - Education and demonstration
  • 040 - Card, picture, or sign exhibiting