The Edison transmitter with later improvements was used for more than 60 years.

With later improvements and a vaccine, the death rate is now negligible.

The automatic device was a later improvement, but it works, as you shall see.

Blake used a carbon button design that initially would not stay in adjustment, but with later improvements proved to be workable.

A later improvement, developed by many groups in 1975 was the use of noble gas halides (originally XeBr).

This project came to nothing and has no direct connection to Watt's later improvement of the Newcomen steam engine.

He went on to patent several later improvements.

The rounded chimney may be a later improvement.

With his original design and later improvements, Coggeshall's slide rule brought the tool its first practical use outside of mathematical study.

However, with the later improvement in the economy, the Greyhound Corporation began to prosper again.