On some, he said, the trick was to twist a specific part of the ornamental design of the lock facing.
About a dozen were design patents, which protect an ornamental design for up to a 14-year period.
Rungius's art education began with a course in ornamental design.
They are typically round in shape and display a variety of ornamental designs.
From the 16th century onwards, an ornamental design on the ankle or side of a sock has been called a clock.
Set in its ornamental design were six spots shaped like ancient goblets.
The south east corner has a more ornamental design, and an avenue of trees form the northern edge along the river.
The windows portray a variety of Biblical scenes, landscapes, and ornamental designs.
It is not, as I first suspected, a purely abstract ornamental design.
The arts of ornamental design and miniature are also very popular.