1801714

Information

• Patent Grant
• 1801714

• References
• Source

• Patent Number

  1,801,714

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1931
  93 years ago

• CPC

  • G07F17/166 - for calendars

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 101 - Printing