2581780

Information

• Patent Grant
• 2581780

• References
• Source

• Patent Number

  2,581,780

• Date Filed

  Not available

• Date Issued

  Tuesday, January 8, 1952
  73 years ago

• CPC

  • H03C3/28 - using variable impedance driven mechanically or acoustically

• US Classifications

  • 332 - Modulators
  • 116 - Signals and indicators
  • 367 - Communications, electrical: acoustic wave systems and devices