Invention of the pendulum clock
Sundial
the siege tower
With the invention of the computer, typewriters were made obsolete.
it was obsolete by the invention of the gun
Invention of copper and bronze made pretty much every stone tool at the time obsolete.
The primary use for whale oil was for fuel in oil lamps. (This was made obsolete with the invention of electricity and electric lamps.)
the sundial
The Qin
Your Mom and me did it so we made you and asians who then went on to make the sundial
stone
the invention of the cannon
obsolete