2787777

Information

• Patent Grant
• 2787777

• References
• Source

• Patent Number

  2,787,777

• Date Filed

  Not available

• Date Issued

  Tuesday, April 2, 1957
  68 years ago

• CPC

  • H04R17/00 - Piezo-electric transducers Electrostrictive transducers
  • B06B1/0607 - using multiple elements
  • B06B1/0611 - in a pile
  • B06B1/0622 - on one surface
  • B06B1/0655 - of cylindrical shape
  • G01S1/72 - using ultrasonic, sonic or infrasonic waves
  • H01J31/62 - with separate reading and writing rays

• US Classifications

  • 367 - Communications, electrical: acoustic wave systems and devices
  • 310 - Electrical generator or motor structure