Then again, there will be others trying to improve on your invention.

They won't even have to know how to read; the next improvement on my invention will be the talking book.

They might take him to court in order to get their hands on his invention.

After his release he started a laboratory and began working on several inventions.

In 1829 he took out a patent for an improvement on his original invention.

Why should we deny protection to people who are working on inventions in that field?

I ask no more than a comfortable life and the chance to work on my inventions, being a man of small ambition.

The professor needed a competent assistant to work on his inventions with him.

He was forced to give up his law profession after 9 years and focused on inventions.

He released information on his invention the following year.