Winding Up Springs [g04c 1/06] Patents (Class 968/435)

By oscillating movement [g04c 1/06b] (Class 968/436)

By continuous rotating movement [g04c 1/06c] (Class 968/437)

By stepping rotating movement [g04c 1/06d] (Class 968/438)

There are no patents to show for this class.