Although recovery took hold, the unemployment rate remained unchanged through the start of a second recession in July 1981.

The J30 remained nearly unchanged through its production period.

NY 280 remained relatively unchanged up through the early 1960s.

Except for that detail, the bridge remained unchanged through the centuries.

The safety of those inside has been the wall's purpose, unchanged through much of American history.

These engine blocks were unchanged through the 1969 model year.

This same basic design would remain virtually unchanged through 1937.

This listing remained unchanged through the edition of January 1962.

This system remained basically unchanged through most of the Soviet period.

These would remain unchanged through the 1976 model year.