2730939

Information

• Patent Grant
• 2730939

• References
• Source

• Patent Number

  2,730,939

• Date Filed

  Not available

• Date Issued

  Tuesday, January 17, 1956
  69 years ago

• CPC

  • G03B27/581 - in copying cameras

• US Classifications

  • 355 - Photocopying
  • 101 - Printing
  • 396 - Photography