3590488

Information

• Patent Grant
• 3590488

• References
• Source

• Patent Number

  3,590,488

• Date Filed

  Not available

• Date Issued

  Tuesday, July 6, 1971
  53 years ago

• CPC

  • B44D3/18 - Boards or sheets with surfaces prepared for painting or drawing pictures Stretching frames for canvases
  • A63H33/22 - Optical, colour, or shadow toys
  • B43L11/00 - Non-circular-curve-drawing instruments
  • B43L11/005 - pendulum-actuated

• US Classifications

  • 033 - Geometrical instruments