3709584

Information

• Patent Grant
• 3709584

• References
• Source

• Patent Number

  3,709,584

• Date Filed

  Not available

• Date Issued

  Tuesday, January 9, 1973
  52 years ago

• CPC

  • G21F7/02 - Observation devices permitting vision but shielding the observer
  • G02B5/005 - Diaphragms
  • G03B9/08 - Shutters

• US Classifications

  • 359 - Optical: systems and elements
  • 976 - Nuclear technology