It is not impossible that his father invented the metre.

Tom switched on the giant searchlight his father had invented.

You even thought your screwy father had invented some altogether new form of communication.

In 1840, his father invented the first direct-acting steam pump.

And your father was inventing a new future, doing away with the past.

Her father has left this community and invented a time machine.

"They are but names which you and your fathers have invented."

He and his father invented the game of Gin rummy in 1909.

He may not have been around to play catch some nights, the younger Bush said, "but my father more or less invented quality time."

That gradient factor your father invented is a tricky thing.