3620146

Information

• Patent Grant
• 3620146

• References
• Source

• Patent Number

  3,620,146

• Date Filed

  Not available

• Date Issued

  Tuesday, November 16, 1971
  53 years ago

• CPC

  • G03B19/08 - with provision for alternative use with plates or cut-films
  • G03B17/12 - with means for supporting objectives, supplementary lenses, filters, masks, or turrets

• US Classifications

  • 396 - Photography
  • 359 - Optical: systems and elements