The others are deemed unsafe or ineffective and discarded during different stages of testing.
Both plans were deemed too costly and ineffective in relieving congestion.
The Federal Aviation Administration's inspection system is deemed ineffective.
Manufacturers still object to expanding the Government program, which could hurt the sales potential of products deemed ineffective or too costly.
The civil air organisation was deemed too primitive and ineffective.
The result was a surfeit of selling that was widely deemed confusing and ineffective.
If over half the teachers are deemed ineffective so be it - even if I am one of them.
In the United Kingdom, the initial approach was deemed ineffective.
Teachers who received fewer than 175 out of 400 points were deemed ineffective and were dismissed.
The mayor was given control of the city schools after a series of elected school boards were deemed ineffective by city voters.