3055113

Information

• Patent Grant
• 3055113

• References
• Source

• Patent Number

  3,055,113

• Date Filed

  Not available

• Date Issued

  Tuesday, September 25, 1962
  62 years ago

• CPC

  • B43L13/046 - with cables
  • B43L1/12 - having transluscent writing surfaces producing visual impressions by co-operation with backing members
  • G09B11/00 - Teaching hand-writing, shorthand, drawing, or painting
  • G09F19/06 - Writing devices

• US Classifications

  • 033 - Geometrical instruments
  • 346 - Recorders
  • 434 - Education and demonstration