When was the suspension on bikes invented?

The suspension system for bicycles was developed in the late 19th century, with early designs appearing around the 1860s and 1870s. However, it wasn't until the 1970s that more advanced suspension systems, particularly for mountain bikes, began to emerge, revolutionizing ride comfort and performance. The introduction of full-suspension designs in the 1980s further enhanced the capabilities of bicycles for off-road riding.