2140714

Information

• Patent Grant
• 2140714

• References
• Source

• Patent Number

  2,140,714

• Date Filed

  Not available

• Date Issued

  Tuesday, December 20, 1938
  86 years ago

• CPC

  • G06G1/0021 - for civil engineering
  • E04G21/1808 - Holders for bricklayers' lines, bricklayers' bars; Sloping braces

• US Classifications

  • 033 - Geometrical instruments
  • 235 - Registers