3163939

Information

• Patent Grant
• 3163939

• References
• Source

• Patent Number

  3,163,939

• Date Filed

  Not available

• Date Issued

  Tuesday, January 5, 1965
  60 years ago

• CPC

  • B43L5/007 - drawing copying devices using a transparency

• US Classifications

  • 033 - Geometrical instruments
  • 108 - Horizontally supported planar surfaces