3321590

Information

• Patent Grant
• 3321590

• References
• Source

• Patent Number

  3,321,590

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1967
  57 years ago

• CPC

  • G04C21/32 - giving indications at a number of places each at a different time
  • G05B19/14 - using punched cards or tapes

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 968 - Horology