1877375

Information

• Patent Grant
• 1877375

• References
• Source

• Patent Number

  1,877,375

• Date Filed

  Not available

• Date Issued

  Tuesday, September 13, 1932
  92 years ago

• CPC

  • B43L7/08 - with arrangements for attaching additional drawing equipment

• US Classifications

  • 033 - Geometrical instruments