Phillips's invention eventually proved of major industrial importance.

He started walking briskly toward the scene of the explosion, hoping fervently that the new invention would prove successful.

"In war or peace the invention will prove a blessing," said Barton Swift, looking proudly at his son.

Should the invention prove to be less than effective, it is granted the title 'Patent Denied'.

After his invention proved safe, as his inventions seldom did, he would then take his turn.

The invention soon proved vital to the Allied war effort in designing aircraft, gun barrels and other machinery of destruction.

An amateur inventor, he took out 20 to 30 patents although his inventions proved far more profitable to others than to himself.

The right inventions prove that it's possible.

Those inventions fully prove what the Chinese people are capable of doing - so why not now?

The invention would prove outstandingly successful and it is in universal use in electricity generation to this day.