1456847

Information

• Patent Grant
• 1456847

• References
• Source

• Patent Number

  1,456,847

• Date Filed

  Not available

• Date Issued

  Tuesday, May 29, 1923
  101 years ago

• CPC

  • G01L19/08 - Means for indicating or recording
  • G01L23/06 - Indicating or recording by optical means

• US Classifications

  • 073 - Measuring and testing