3813140

Information

• Patent Grant
• 3813140

• References
• Source

• Patent Number

  3,813,140

• Date Filed

  Not available

• Date Issued

  Tuesday, May 28, 1974
  50 years ago

• CPC

  • G01S7/4817 - relating to scanning
  • B61L25/041 - using reflecting tags
  • G01S7/4811 - common to transmitter and receiver
  • G01S17/89 - for mapping or imaging
  • H04N1/029 - Heads optically focused on only one picture element at a time

• US Classifications

  • 359 - Optical: systems and elements
  • 250 - Radiant energy
  • 348 - Television