1903393

Information

• Patent Grant
• 1903393

• References
• Source

• Patent Number

  1,903,393

• Date Filed

  Not available

• Date Issued

  Tuesday, April 4, 1933
  91 years ago

• CPC

  • B43L9/16 - Features common to compasses, dividers, and callipers

• US Classifications

  • 033 - Geometrical instruments