3777645

Information

• Patent Grant
• 3777645

• References
• Source

• Patent Number

  3,777,645

• Date Filed

  Not available

• Date Issued

  Tuesday, December 11, 1973
  50 years ago

• CPC

  • G03B17/44 - Means for exchanging focusing screen and light sensitive material
  • G03B27/581 - in copying cameras

• US Classifications

  • 396 - Photography