3257988

Information

• Patent Grant
• 3257988

• References
• Source

• Patent Number

  3,257,988

• Date Filed

  Not available

• Date Issued

  Tuesday, June 28, 1966
  58 years ago

• CPC

  • G10K9/08 - driven by water or other liquids
  • B06B1/04 - operating with electromagnetism

• US Classifications

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