US PATENT SUBCLASS 429 / 4
WITH SONIC OR ULTRASONIC FEATURE

Current as of: June, 1999
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429 /   HD   CHEMISTRY: ELECTRICAL CURRENT PRODUCING APPARATUS, PRODUCT, AND PROCESS

4WITH SONIC OR ULTRASONIC FEATURE

DEFINITION

Classification: 429/4

(under the class definition) Apparatus having periodic motion applied to the same by sonic or ultrasonic means and the related process.