1972387

Information

• Patent Grant
• 1972387

• References
• Source

• Patent Number

  1,972,387

• Date Filed

  Not available

• Date Issued

  Tuesday, September 4, 1934
  90 years ago

• CPC

  • H03J3/08 - by varying a second parameter simultaneously with the tuning
  • H03G1/0011 - the device being at least one of the amplifying tubes of the amplifier

• US Classifications

  • 330 - Amplifiers