17th-century mentor spring in Lisbon Carriage Museum The earliest recognised leaf springs started appearing on carriages in France during the mid-17th century in the form of the two-portion elbow spring (since the illustrated case in point from Lisbon), and later migrated to England and Germany,[six] appearing about the carriages of https://remingtonvpjbs.blogdosaga.com/35325598/ltd-fundamentals-explained