Page identification by detection of optical characteristics

Pattern analyzer

Peripheral interface device for color recognition

Pesticide detector and method

Pesticide detector and method

Pesticide detector and method

Photocatalysis testing device

Photoelectric color sensor

Photoelectric colorimeter

Photoelectric densitometer

Photoelectric element characteristic measuring apparatus

Photoelectric gas analyzer

Photoelectric sensor

Photographic printing exposure determining apparatus and film ty

Photometer

Photometer apparatus

Photometer having a long lamp life, reduced warm-up period and r

Photometer with interchangeable calibration cards

Photometering apparatus for use in chemical analyzer

Photometric analyzer