They are not commonly cultivated and have no known uses.

There are not any known uses of this format on the consumer market.

There is no known use of these vines by humans.

Less known uses also include behavioral study of fluids and motions.

Dioxins are not intentionally produced and have no known use.

However, in the early days of electric experimentation, alternating current generally had no known use.

This is the only known operational use of flying boats within central Europe.

The last known use of the branch was on 30 May 1999 for a special railtour.

There are also many instances of genes detected in species that have no known current use for them.