The metal had virtually no uses until the invention of the gas mantle in 1885.

The land was too difficult to work until the invention of the tractor.

This was the only way to record a television show until the invention of videotape.

The system did not come into wide use in Europe, however, until the invention of printing.

Several hundred theaters burned down from 1800 until the invention of the electric bulb.

These would remain the only known planets until the invention of the telescope in early modern times.

It was used as the primary pain reliever until the invention of aspirin.

It was the best device for this purpose until the invention of radar.

Not until the invention of the armored tank, late in the war, did the offense began to work again as a military tactic.

They were not visible until the invention of the electron microscope.