It featured a revolutionary hingeless rotor system, at that time a pioneering innovation in helicopters when it was introduced into service in 1970.

Along the way, he accomplished several pioneering innovations.

In her day, most Toronto art critics were not sure of her pioneering innovations.

Pockets of excellence and even of pioneering innovation remain, but the system has done little to spread either the word or the practice.

From 1932, New Imperial was known for pioneering innovations in unit construction on motorcycles .

He exhibited internationally across Europe, but some of his pioneering artistic innovation was forgotten.

Osmania has a rich history of pioneering medical innovations.

Most of his government's pioneering innovations came about during its first term, including:

He built it into a thriving Fortune 500 company through pioneering innovations in cellular communications.

All were pioneering innovations at the time of the W220's conception.