3622825

Information

• Patent Grant
• 3622825

• References
• Source

• Patent Number

  3,622,825

• Date Filed

  Not available

• Date Issued

  Tuesday, November 23, 1971
  53 years ago

• CPC

  • B06B1/0629 - Square array
  • H01J31/495 - Pick-up tubes adapted for an input of sonic, ultrasonic, or mechanical vibrations and having an electric output

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 367 - Communications, electrical: acoustic wave systems and devices