3553854

Information

• Patent Grant
• 3553854

• References
• Source

• Patent Number

  3,553,854

• Date Filed

  Not available

• Date Issued

  Tuesday, January 12, 1971
  54 years ago

• CPC

  • G09B29/00 - Maps Plans Charts Diagrams
  • G09D1/00 - Railway or like time or fare tables Indicating or reading aids therefor

• US Classifications

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