Removable grounding receptacle for panelboards

Claim 1

A PLUG RECEPTACLE MOUNTABLE ON A PANELBOARD AT A CIRCUIT BREAKER LOCATION THEREOF, SAID RECEPTACLE COMPRISING A HOUSING HAVING AN OPEN BACK AND A COVER THEREFOR, A FIRST AND A SECOND PRONG-RECEIVING CONTACT MOUNTED WITHIN INDIVIDUAL RECESSES OF SAID HOUSIG AND RETAINED THEREIN BY SAID COVER, PRONG-RECEIVING APERTURES IN THE FRONT THEREOF ALIGNED WITH SAID CONTACTS, SAID HOUSING ALSO HAVING HOLES IN A SIDE THEREOF THROUGH WHICH SAID CONTACTS ARE ACCESSIBLE FOR CIRCUIT CONNECTIONS; A GROUNDING CONTACT DISPOSED WITHIN ANOTHER RECESS OF SAID HOUSING AND ALIGNED OPPOSITE ANOTHER PRONG-RECEIVING APERTURE OF SAID HOUSING;