Selective mounting for circuit interrupters

Claim 1

IN COMBINATION, AN ELECTRICAL PANELBOARD AND A PLURALITY OF ELECTRIC CIRCUIT BREAKERS MOUNTED TO SAID PANELBOARD; SAID PANELBOARD COMPRISING A PLURALITY OF BUS CONDUCTORS, MEANS DEFINING A PLURALITY OF BUS CONDUCTOR TERMINAL ENGAGING POINTS, A MOUNTING MEANS SPACED FROM SAID POINTS BY A DISTANCE SPANNED BY SAID CIRCUIT BREAKERS, A PLURALITY OF PANEL REGISTRY MEANS CARRIED BY SAID MOUNTING MEANS AND EACH OPERATIVELY POSITIONED TO ALIGN A CIRCUIT BREAKER WITH ONE OF SAID POINTS; EACH OF SAID CIRCUIT BREAKERS INCLUDING A HOUSING, A LINE TERMINAL AT ONE END OF SAID HOUSING IN ENGAGEMENT WITH ONE SAID BUS CONDUCTORS AT ONE OF SAID POINTS, A LOAD TERMINAL AT THE OTHER END OF SAID HOUSING, A RECESS IN SAID HOUSING AT SAID OTHER END THEREOF, SAID RECESS CONSTITUTING A CIRCUIT BREAKER REGISTRY MEANS AND HAVING ONE OF SAID PANEL REGISTRY MEANS DISPOSED THEREIN; EACH OF SAID PANEL REGISTRY MEANS HAVING AT LEAST ONE REMOVABLE PORTION TO ALLOW FOR MOUNTING OF OTHERS OF SAID BREAKERS OF DIFFERENT OPERATING CHARACTERISTICS AND DIFFERENTLY SHAPED REGISTRY MEANS RECESSES AT A GIVEN ONE OF SAID PANEL REGISTRY MEANS; EACH REMOVABLE PORTION BEING OPERATIVELY POSITIONED SO THAT UPON REMOVAL OF ANY PORTION THE WIDTH OF SAID PANEL REGISTRY MEANS REMAINS CONSTANT.