1874517

Information

• Patent Grant
• 1874517

• References
• Source

• Patent Number

  1,874,517

• Date Filed

  Not available

• Date Issued

  Tuesday, August 30, 1932
  92 years ago

• CPC

  • G01B3/40 - for external screw-threads
  • Y10S33/14 - Spline and gear

• US Classifications

  • 033 - Geometrical instruments