Planning and scheduling board

Claim 1

A PLANNING AND SCHEDULING BOARD OF HARD EXTRUDABLE PLASTIC HAVING A PLURALITY OF PARALLEL GROOVE TRACKS; A UNIT TIME SCALE INDICATED ALONG SAID TRACKS; A PLURALITY OF ACTIVITY-DESIGNATION CARDS AND RESILIENT PLASTIC HOLDERS FOR SAID CARDS ADAPTED FOR FRICTION-TYPE LOCK INSERTION INTO SAID TRACKS AND ADAPTED TO BE CUT TO LENGTHS CORRESPONDING TO ONE UNIT TIME LESS THAN THE NUMBER OF WORKING TIME UNITS SCHEDULED FOR THE PARTICULAR ACTIVITY A PLURALITY OF HARD PLASTIC EVENT BLOCKS HAVING A WIDTH EQUAL TO ONE WORKING TIME UNIT AND A BASE PORTION ADAPTED FOR FRICTON-TYPE LOCK INSERTION INTO SAID TRACKS AT THE TERMINAL ENDS OF THE ACTIVITY-DESIGNATION CARDS AND HOLDERS; PLASTIC EVENT BARS HAVING A WIDTH EQUAL TO ONE WORKING TIME UNIT AND LENGTH SUFFICIENT TO CROSS A SELECTED NUMBER OF TRACKS, SAID EVENT BARS HAVING A BASE PORTION ADAPTED FOR FRICTION-TYPE LOCK INSERTION INTO SAID TRACK; ELONGATED BRIDGE RODS ADAPTED TO CONNECT EVENT BLOCKS IN NON-ADJACENT TRACKS BY BRIDGING OVER INTERVENTING TRACKS, AND COUPLING MEANS FOR COUPLING EVENT BLOCKS IN SELECTED INTERMEDIATE TRACKS TO THE BRIDGE RODS.