The lamp with a tungsten filament is indeed the only design used now, but in 1906 they were too expensive.

Yours was the only successful design; other attempts at including them were either not viable or had to be destroyed.

It was the only design that could be manufactured with Minebea's equipment.

Scott's entry had been the only design in the Gothic style.

They encourage you to imagine that theirs is not the only design that could have served the functions of this complex.

For its third generation, the American emerged with what would be its only completely new design.

The only design with the needed performance at that point in time was the McDonnell F-88.

Scott admitted that so far his only design to be constructed had been a pipe-rack.

The course, the only design by Henry Fownes, opened in 1903.

Until 1883, this was the only design except for the triangulars.