Units having a beam-scanning function, and a light-receiving function and a photoelectric-conversion function are separated from the main-body of a stationary-type bar code reader as a separable unit. The separable unit is detachably mounted on the main-body unit. The separable unit is mounted on the...http://www.google.de/patents/US5314631?utm_source=gb-gplus-sharePatent US5314631 - Stationary bar code reader which can be detected and separated into a hand-held bar code reader
