2193848

Information

• Patent Grant
• 2193848

• References
• Source

• Patent Number

  2,193,848

• Date Filed

  Not available

• Date Issued

  Tuesday, March 19, 1940
  84 years ago

• CPC

  • G06G1/0078 - for calculating interests
  • G09D3/06 - with rotatable members

• US Classifications

  • 040 - Card, picture, or sign exhibiting