1918548

Information

• Patent Grant
• 1918548

• References
• Source

• Patent Number

  1,918,548

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1933
  91 years ago

• CPC

  • G01C3/30 - with adaptation to the measurement of the height of an object

• US Classifications

  • 356 - Optics: measuring and testing