3818496

Information

• Patent Grant
• 3818496

• References
• Source

• Patent Number

  3,818,496

• Date Filed

  Not available

• Date Issued

  Tuesday, June 18, 1974
  50 years ago

• CPC

  • G06K15/225 - using optical plotters

• US Classifications

  • 396 - Photography
  • 355 - Photocopying