2804042

Information

• Patent Grant
• 2804042

• References
• Source

• Patent Number

  2,804,042

• Date Filed

  Not available

• Date Issued

  Tuesday, August 27, 1957
  67 years ago

• CPC

  • G10K7/04 - by an electric motor
  • Y10S116/18 - Wave generators

• US Classifications

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