Patent Document ID: 4658525
Application ID: 06557456
Patent Status: 1

Claim One:
1. A supervisory control panel board including: (a) a supervisory control panel having a supervisory display surface zone in which illumination apertures are formed; (b) a plurality of film members superposed one over another and on which graphic diagrams are respectively inscribed so that a graphic diagram is formed of a synthesis of the plurality of graphic diagram respectively inscribed on the plurality of film members, said graphic diagrams being obtained by enlargement or reduction of views which are taken on photographic films from original illustrations; (c) a dressing frame mounted on said supervisory display surface zone, for supporting said film members so that the same are in close contact with said supervisory display surface zone, said dressing frame being removable from said supervisory display surface zone; and, (d) a transparent plate supported by said dressing frame and arranged to make said film members press-contact with said supervisory display surface zone.