2821022

Information

• Patent Grant
• 2821022

• References
• Source

• Patent Number

  2,821,022

• Date Filed

  Not available

• Date Issued

  Tuesday, January 28, 1958
  67 years ago

• CPC

  • G01B3/306 - with inclined slide plane
  • G01B5/0004 - Supports

• US Classifications

  • 033 - Geometrical instruments