Method and apparatus for centering aligning and attaching carria

Method and apparatus for transferring writing tools in a graphic

Method for effecting actions over vertical surfaces

Method of initializing pen recorder carriage position

Mirror mount for use in equipment for converting digital data in

Modular stylus assembly

Multi-color pen recording device

Multi-element writing instrument

Multi-pen recording device

Multi-stylus printing head

Multiple electrode system

Multiple-stylus electrode for discharge printing

Near-linear spring connect structure for flexible interconnect c

Non-fouling print stylus

Non-mechanical printer operating in accordance with an electrogr

Pen capping mechanism

Pen carriage suspension for graphic recorder

Pen changeover mechanism for pen recorder

Pen changer with orthogonal pick up from the turret

Pen control circuit