589527

Information

• Patent Grant
• 589527

• References
• Source

• Patent Number

  589,527

• Date Filed

  Not available

• Date Issued

  Tuesday, September 7, 1897
  126 years ago

• CPC

  • G01C3/24 - using a parallactic triangle with fixed angles and a base of variable length in the observation station
  • G02F1/1335 - Structural association of optical devices

• US Classifications

  • 356 - Optics: measuring and testing