3493284

Information

• Patent Grant
• 3493284

• References
• Source

• Patent Number

  3,493,284

• Date Filed

  Not available

• Date Issued

  Tuesday, February 3, 1970
  55 years ago

• CPC

  • G02B27/648 - for automatically maintaining a reference alignment
  • F41G7/005 - for testing benches or sets
  • G01C25/00 - Manufacturing, calibrating, cleaning, or repairing instruments and devices referred to in the preceding groups

• US Classifications

  • 385 - Optical waveguides
  • 359 - Optical: systems and elements