RUHLE COMPANIES, INC.

ELECTROSYN

Position transducers; electrically excited and read position transducers for detecting, transmitting and displaying rotary and linear positions information; electrical field type electrically excited and read position transducers for transmitting and displaying rotary and linear positions information; capacitive electrical position transducers; analog to digital and digital converters for use with position transducers; signal converters;

FOCI

SCIENTIFIC AND OPTICAL INSTRUMENTS-NAMELY, MICROAMMETERS, SPECTROFLUOROMETERS, COLLIMATORS, COMPARATORS, FILTERS, LENSES, MICROSCOPES, MONOCHROMATORS, PHOTOGRAPHIC LENSES, PRISMS, PROJECTION SCREENS, PROJECTORS, SPECTROMETERS, TELESCOPES, TELEVISION LENSES AND TOOLMAKERS' MICROSCOPES; OPTICAL SIMULATORS AND SIMULATION EQUIPMENT-NAMELY, VISUAL TRAINING AIDS COMPRISED OF SIMULATED COCKPITS, DRIVERS' SEATS AND LOCOMOTIVE CAB SEATS OR STOOLS, AND SCENE GENERATING ATTACHMENTS THEREFOR;

INDUCTOSYN

ELECTRICAL APPARATUS FOR THE MEASUREMENT OF ANGLES AND OF LINEAR DISPLACEMENTS;

PANCAKE WINDOW

OPTICAL APPARATUS-NAMELY, IN-LINE INFINITY IMAGE OPTICAL DISPLAY SYSTEMS, COMPRISING A COLLIMATING MIRROR ELEMENT, QUARTER WAVE AND POLARIZING LAMINATED PLATES, SAID APPARATUS BEING SOLD AS A UNIT;NO CLAIM IS MADE TO EXCLUSIVE USE OF WINDOW APART FROM THE MARK AS SHOWN.;