The ornamental design for a doorstop, as shown and described.
The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.
1.-2. Doorstop
1.1 is a perspective view
1.2 is a close-up view
1.3 is a front view
2.1 is a close-up view
2.2 is a close-up view
2.3 is a front view
Design is designed to lift a doorstop from its down position to its upright position by using a rod that is attached to the door and connected to the doorstop; the practicality of design makes lifting a doorstop foot free and never having to bend over to lift a doorstop with a hand, the protection is sought only for the lift doorstop; the door itself is only for the purposes of demonstration; therefore, protection for the part of the door is not sought.