2438813

Information

• Patent Grant
• 2438813

• References
• Source

• Patent Number

  2,438,813

• Date Filed

  Not available

• Date Issued

  Tuesday, March 30, 1948
  76 years ago

• CPC

  • B44B3/02 - wherein plane surfaces are worked
  • B44B2700/023 - for engraving parallel lines of flat surfaces

• US Classifications

  • 033 - Geometrical instruments