1542534

Information

• Patent Grant
• 1542534

• References
• Source

• Patent Number

  1,542,534

• Date Filed

  Not available

• Date Issued

  Tuesday, June 16, 1925
  99 years ago

• CPC

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

• US Classifications

  • 356 - Optics: measuring and testing
  • 235 - Registers