2144696

Information

• Patent Grant
• 2144696

• References
• Source

• Patent Number

  2,144,696

• Date Filed

  Not available

• Date Issued

  Tuesday, January 24, 1939
  86 years ago

• CPC

  • G01C9/30 - Means for adjusting dimensions of bubble

• US Classifications

  • 033 - Geometrical instruments
  • 073 - Measuring and testing