A stapler includes a base, a staple storage chamber coupled with the base, a staple pusher assembly positioned at least partially in the staple storage chamber, and a low staple indicator distinct from the staple pusher assembly and movable between a first position indicating the presence of a staple...http://www.google.com/patents/US20060016847?utm_source=gb-gplus-sharePatent US20060016847 - Low staple indicator for a stapler
