3291996

Information

• Patent Grant
• 3291996

• References
• Source

• Patent Number

  3,291,996

• Date Filed

  Not available

• Date Issued

  Tuesday, December 13, 1966
  57 years ago

• CPC

  • G03B7/09908 - on the camera or in the objective
  • G03B7/0993 - in the camera

• US Classifications

  • 250 - Radiant energy
  • 359 - Optical: systems and elements
  • 396 - Photography