2852977

Information

• Patent Grant
• 2852977

• References
• Source

• Patent Number

  2,852,977

• Date Filed

  Not available

• Date Issued

  Tuesday, September 23, 1958
  66 years ago

• CPC

  • G03B27/722 - when the reproduction scale is changed

• US Classifications

  • 353 - Optics: image projectors
  • 355 - Photocopying