1633615

Information

• Patent Grant
• 1633615

• References
• Source

• Patent Number

  1,633,615

• Date Filed

  Not available

• Date Issued

  Tuesday, June 28, 1927
  97 years ago

• CPC

  • H04B3/147 - fixed equalisers

• US Classifications

  • 379 - Telephonic communications
  • 333 - Wave transmission lines and networks