Apparatus for indicating the output of a machine

Apparatus for playing a game of skill

Apparatus for remote opening of doors or gates of a building

Apparatus for sensing and ejecting bricks of improper size

Apparatus for use when filling-in and controlling game coupons

Apparatus for vending individually marked articles

Apparatus usable as a marking unit

Apparatus usable as a marking unit

Apparatus, system and method for aircraft security and...

Arrangement for documenting the status of removable parts on...

Assessment of life of duct

Attendance recorder with adjustable programming means

Attendance recording system

Authentication device and gaming machine equipped with the same

Authorization card

Authorization control device

Authorization verification method and devices suited therefor

Automated sign inventory system

Automated travel log system

Automated vehicle mileage tracker