3304541

Information

• Patent Grant
• 3304541

• References
• Source

• Patent Number

  3,304,541

• Date Filed

  Not available

• Date Issued

  Tuesday, February 14, 1967
  57 years ago

• CPC

  • B67D7/263 - using electrical or electro-mechanical means
  • G06Q20/342 - Cards defining paid or billed services or quantities
  • G07C9/00039 - by means of a pass-word
  • G07F7/025 - by means

• US Classifications

  • 340 - Communications: electrical