H - Electricity – 04 – R
Patent
H - Electricity
04
R
349/67.9
H04R 17/00 (2006.01) G10K 11/18 (2006.01)
Patent
CA 1101982
Abstract of the Disclosure Acoustic ultrasonic waves are launched in a block of single-crystal material, such as alpha-quartz, by means of a transducer fastened to one end of the block. The waves are steered by electrically altering the properties of the crystal between the piezoelectrically unstiffened and stiffened excitation modes.
308972
Allen John A.
The Government Of The United States As Represented By The Secret
LandOfFree
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