US PATENT SUBCLASS 378 / 78
.~.~.~.~ Piezoelectric crystal

Current as of: June, 1999
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378 /   HD   X-RAY OR GAMMA RAY SYSTEMS OR DEVICES

1  DF  SPECIFIC APPLICATION {14}
70  DF  .~ Diffraction, reflection, or scattering analysis {3}
71  DF  .~.~ Diffractometry {3}
73  DF  .~.~.~ Crystalography {5}
78.~.~.~.~ Piezoelectric crystal

DEFINITION

Classification: 378/78

Piezoelectric crystal:

(under subclass 73) Subject matter in which the crystal being analyzed is piezoelectric, i.e., becomes electrically polarized when mechanically strained or mechanically strained when electrically polarized.