3859730

Information

• Patent Grant
• 3859730

• References
• Source

• Patent Number

  3,859,730

• Date Filed

  Not available

• Date Issued

  Tuesday, January 14, 1975
  49 years ago

• CPC

  • G01B5/245 - for testing perpendicularity
  • G01B3/40 - for external screw-threads
  • G01B3/48 - for internal screw-threads

• US Classifications

  • 033 - Geometrical instruments
  • 073 - Measuring and testing