2449219

Information

• Patent Grant
• 2449219

• References
• Source

• Patent Number

  2,449,219

• Date Filed

  Not available

• Date Issued

  Tuesday, September 14, 1948
  76 years ago

• CPC

  • D01H1/162 - for ring type
  • G01C9/24 - in closed containers partially filled with liquid so as to leave a gas bubble

• US Classifications

  • 033 - Geometrical instruments