3577171

Information

• Patent Grant
• 3577171

• References
• Source

• Patent Number

  3,577,171

• Date Filed

  Not available

• Date Issued

  Tuesday, May 4, 1971
  53 years ago

• CPC

  • H01J31/495 - Pick-up tubes adapted for an input of sonic, ultrasonic, or mechanical vibrations and having an electric output
  • H01J31/49 - Pick-up adapted for an input of electromagnetic radiation other than visible light and having an electric output
  • Y10S367/901 - Noise or unwanted signal reduction in nonseismic receiving system

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 073 - Measuring and testing
  • 174 - Electricity: conductors and insulators
  • 313 - Electric lamp and discharge devices
  • 367 - Communications, electrical: acoustic wave systems and devices