1710641

Information

• Patent Grant
• 1710641

• References
• Source

• Patent Number

  1,710,641

• Date Filed

  Not available

• Date Issued

  Tuesday, April 23, 1929
  95 years ago

• CPC

  • G01C3/20 - with adaptation to the measurement of the height of an object

• US Classifications

  • 356 - Optics: measuring and testing