1772509

Information

• Patent Grant
• 1772509

• References
• Source

• Patent Number

  1,772,509

• Date Filed

  Not available

• Date Issued

  Tuesday, August 12, 1930
  94 years ago

• CPC

  • H02M1/14 - Arrangements for reducing ripples from dc input or output
  • H02M1/146 - using discharge tubes

• US Classifications

  • 363 - Electric power conversion systems
  • 333 - Wave transmission lines and networks
  • 379 - Telephonic communications