3572228

Information

• Patent Grant
• 3572228

• References
• Source

• Patent Number

  3,572,228

• Date Filed

  Not available

• Date Issued

  Tuesday, March 23, 1971
  54 years ago

• CPC

  • G03B27/581 - in copying cameras
  • G03B1/48 - Gates or pressure devices

• US Classifications

  • 396 - Photography
  • 033 - Geometrical instruments
  • 355 - Photocopying