3883244

Information

• Patent Grant
• 3883244

• References
• Source

• Patent Number

  3,883,244

• Date Filed

  Not available

• Date Issued

  Tuesday, May 13, 1975
  49 years ago

• CPC

  • G03B27/722 - when the reproduction scale is changed
  • G03B21/53 - Means for automatic focusing

• US Classifications

  • 355 - Photocopying
  • 352 - Optics: motion pictures
  • 396 - Photography