2930304

Information

• Patent Grant
• 2930304

• References
• Source

• Patent Number

  2,930,304

• Date Filed

  Not available

• Date Issued

  Tuesday, March 29, 1960
  64 years ago

• CPC

  • G03B17/44 - Means for exchanging focusing screen and light sensitive material

• US Classifications

  • 396 - Photography
  • 355 - Photocopying