Mechanical pencil having collet guide

Mechanical pencil having guides to match guides on a refill cart

Mechanical pencil having propelling device for a bar shaped arti

Mechanical pencil having side push button actuated lead advance

Mechanical pencil lead protection pipe with protuberance

Mechanical pencil structure

Mechanical pencil with a fluid actuator

Mechanical pencil with a plastic chuck

Mechanical pencil with automatic and manual lead advance

Mechanical pencil with automatic lead advance

Mechanical pencil with automatic lead advance

Mechanical pencil with automatic lead advance

Mechanical pencil with automatic lead advance

Mechanical pencil with automatic lead feed

Mechanical pencil with automatic lead feed

Mechanical pencil with chuck closing by normal writing grip

Mechanical pencil with chuck closing by normal writing grip

Mechanical pencil with groove and lug structure

Mechanical pencil with improved slider mechanism

Mechanical pencil with latching chuck actuator