2021201

Information

• Patent Grant
• 2021201

• References
• Source

• Patent Number

  2,021,201

• Date Filed

  Not available

• Date Issued

  Tuesday, November 19, 1935
  89 years ago

• CPC

  • G01B5/0018 - for measuring key-ways
  • G01B5/18 - for measuring depth

• US Classifications

  • 033 - Geometrical instruments
  • 116 - Signals and indicators