3609035

Information

• Patent Grant
• 3609035

• References
• Source

• Patent Number

  3,609,035

• Date Filed

  Not available

• Date Issued

  Tuesday, September 28, 1971
  53 years ago

• CPC

  • G07C9/00055 - visually

• US Classifications

  • 355 - Photocopying
  • 396 - Photography