Infomercials were developed in the 1950's, when sponsors demonstrated their products on the programs.

The deregulation of commercial time encouraged direct marketers to use the longer commercials to demonstrate and sell their products.

Ask manufacturers to demonstrate their products in your school.

During the 1844 International Exhibition in Vienna, it demonstrated its products in public.

And it offers occasional seminars in stores, and all-day shows at least once a season, to demonstrate its latest products.

Short-listed bidders may also be asked to provide samples and/or demonstrate their products or services.

And, of course, there were the usual people demonstrating their company's latest products with the aid of a public address system and a microphone.

A few of his young Chinese inventors demonstrated their new products for me.

The only adventurous item on the agenda for your visit is a little sailing, to demonstrate Emblem's products in action.

Over 100 exhibitors will also demonstrate their products and services.