1685685

Information

• Patent Grant
• 1685685

• References
• Source

• Patent Number

  1,685,685

• Date Filed

  Not available

• Date Issued

  Tuesday, September 25, 1928
  96 years ago

• CPC

  • B41J11/62 - Shields or masks
  • G06C7/06 - with one set of keys for each denomination

• US Classifications

  • 101 - Printing
  • 235 - Registers