1379124

Information

• Patent Grant
• 1379124

• References
• Source

• Patent Number

  1,379,124

• Date Filed

  Not available

• Date Issued

  Tuesday, May 24, 1921
  103 years ago

• CPC

  • B43L7/005 - combined with other drawing aids
  • B43L7/007 - with holding means
  • B43L7/027 - Plural non-adjustable straightedges fixed at right angles
  • B43L7/125 - Comprising at least two straightedges remaining parallel
  • B43L13/002 - Angle intersecting devices

• US Classifications

  • 033 - Geometrical instruments