546848

Information

• Patent Grant
• 546848

• References
• Source

• Patent Number

  546,848

• Date Filed

  Not available

• Date Issued

  Tuesday, September 24, 1895
  129 years ago

• CPC

  • B43L1/02 - Slates
  • G09B1/32 - comprising elements to be used without a special support

• US Classifications

  • 434 - Education and demonstration
  • 206 - Special receptacle or package