For practical devices, this decrease occurs over a period of many years.

No practical device could measure the function in such a region.

In later life, his skill as an inventor of practical devices provided him with a handsome income.

Like many of these more practical devices, its main purpose was to strike a bell at precise times.

The raising of the main living spaces off the ground can be seen as both a stylistic and practical device.

No practical working devices have yet been publicly demonstrated.

All the proposals, however, face difficulties in scaling up to a practical device.

It took 4 years of further development before a truly practical device was developed.

Although such temperatures are still very low, achieving them to create practical commercial devices is much easier.

Thus making it the first truly practical device for hemodialysis.