INDUSTRY: Ultrasonics: Unheard Progress

For years ultrasonics meant something only to dogs and other subhuman creatures. One of the few uses of ultra-high sound waves was in whistles, too high-pitched for human ears, to call pets. Today ultrasonics is an exciting new technological frontier. Last year the ultrasonics industry's commercial and military sales reached $25 million, and in 1959 they are expected to double. Last week industry experts estimated that within five years there will be a $150 million annual market for ultrasonic* equipment.

Ultrasonic machines are used for hospital and industrial cleaning and degreasing. They...

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