3718821

Information

• Patent Grant
• 3718821

• References
• Source

• Patent Number

  3,718,821

• Date Filed

  Not available

• Date Issued

  Tuesday, February 27, 1973
  51 years ago

• CPC

  • G06K11/02 - Automatic curve followers
  • B23Q35/128 - Sensing by using optical means

• US Classifications

  • 250 - Radiant energy
  • 318 - Electricity: motive power systems
  • 359 - Optical: systems and elements