A portable bar code scanner includes a support member and a housing member rotatably mounted on the support member and having a pair of sloping supporting surfaces oriented at an angle to each other and a floor portion on which is mounted a reflecting mirror. One or both of the sloping supporting surfaces...http://www.google.es/patents/US5105070?utm_source=gb-gplus-sharePatente US5105070 - Bar code scanning apparatus with rotating housing member
Bar code scanning apparatus with rotating housing member
