1746537

Information

• Patent Grant
• 1746537

• References
• Source

• Patent Number

  1,746,537

• Date Filed

  Not available

• Date Issued

  Tuesday, February 11, 1930
  95 years ago

• CPC

  • B43L7/12 - Square and pivoted straightedges
  • B43L7/125 - Comprising at least two straightedges remaining parallel

• US Classifications

  • 033 - Geometrical instruments
  • 235 - Registers
  • D10 - Measuring, testing, or signalling instruments