What classical instruments were invented in 1750-1820?

Between 1750 and 1820, several classical instruments were developed or evolved, notably the Clarinet, which gained popularity and refinement during this period. The modern piano also emerged, evolving from earlier keyboard instruments like the harpsichord and fortepiano, with improvements in its action and range. Additionally, the bassoon saw enhancements in its design and playability, leading to a more prominent role in orchestras.