3878328

Information

• Patent Grant
• 3878328

• References
• Source

• Patent Number

  3,878,328

• Date Filed

  Not available

• Date Issued

  Tuesday, April 15, 1975
  50 years ago

• CPC

  • H04R23/006 - using solid state devices
  • G01L1/18 - using properties of piezo-resistive materials
  • G02F1/0327 - Operation of the cell; Circuit arrangements
  • G02F1/0333 - addressed by a beam of charged particles
  • H01L27/20 - including piezo-electric components including electrostrictive components including magnetostrictive components
  • H01L29/00 - Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier

• US Classifications

  • 348 - Television
  • 257 - Active solid-state devices
  • 359 - Optical: systems and elements