3157821

Information

• Patent Grant
• 3157821

• References
• Source

• Patent Number

  3,157,821

• Date Filed

  Not available

• Date Issued

  Tuesday, November 17, 1964
  60 years ago

• CPC

  • G05B19/124 - using tapes, cards or discs with optically sensed marks or codes
  • G05B2219/23201 - Value is analog signal

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 250 - Radiant energy