3641554

Information

• Patent Grant
• 3641554

• References
• Source

• Patent Number

  3,641,554

• Date Filed

  Not available

• Date Issued

  Tuesday, February 8, 1972
  52 years ago

• CPC

  • G01R13/204 - Using means for generating permanent registrations

• US Classifications

  • 345 - Computer graphics processing and selective visual display systems
  • 324 - Electricity: measuring and testing
  • 340 - Communications: electrical