21 SYSTEMS AND APPARATUS COMPRISING BROKERS' AUTOMATIC STOCK AND COMMODITY DISPLAY BOARDS, BID AND ASKED SYSTEMS INCLUDING AUTOMATIC DIAL-REQUEST SYSTEMS, BULLETIN AND ANNOUNCING SERVICE, PRODUCTION CONTROL SYSTEMS, TICKETING, ACCOUNTING AND TOTALIZING SYSTEMS; SYSTEMS FOR THE DISSEMINATION AND ROUTING OF MESSAGES AND REPORTS AND INCLUDING AUTOMATIC STATION IDENTIFICATION DEVICES, DATA PROCESSING SYSTEMS INCLUDING MAGNETIC MEMORY INVENTORY AND MASS DATA HANDLING SYSTEMS FOR STORING, COMPUTING AND READING OUT THE VALUES OR OTHER INFORMATION IN REGARD TO INVENTORY ITEMS AND OTHER DATA, INCLUDING THE STATUS OF TRAVEL ACCOMMODATIONS FOR AIRLINES, RAILROADS OR OTHER TRANSPORTATION SYSTEMS, SYSTEMS FOR DISPLAYING AIRWAY TRAFFIC INFORMATION AND OTHER CONTROL DATA, AND CONTROL SYSTEMS FOR TRAVELING CONVEYORS