Fastening means for securing a fluorescent lampholder to a panel

Claim 1

A FLUORESCENT LAMPHOLDER AND A SUPPORTING MEANS FOR SLIDABLY MOUNTING SAID LAMPHOLDER THERETO, COMPRISING A THIN SUPPORTING PANEL HAVING AN APERTURE FORMED THEREIN, A TONGUE FORMED IN SAID PANEL ADJACENT SAID APERTURE, SAID LAMPHOLDER INCLUDING AN INSULATIVE CASING OF L-SHAPED CONFIGURATION, SAID CASING HAVING A BASE PORTION WITH A FRONT FACE DISPOSED THEREON AND AN UPRIGHT PORTION EXTENDING OUTWARDLY FROM THE BASE PORTION, THE FRONT FACE OF SAID BASE PORTION HAVING A RECESS THEREIN, SAID TONGUE OF SAID PANEL BEING ARRANGED TO COOPERATE WITH THE RECESS OF SAID BASE PORTION THEREBY TO PROVIDE A FIRST POINT OF ENGAGEMENT OF SAID LAMPHOLDER WITH SAID PANEL, SAID UPRIGHT PORTION INCLUDING FRONT, REAR, AND SIDE FACES, SAID SIDE FACES INCLUDING A PAIR OF OPPOSITELY DISPOSED PARALLEL SLOTS FACING OUTWARDLY IN OPPOSITE DIRECTIONS, SAID SLOTS EACH OPENING AT ONE END INTO ONE FACE OF SAID CASING AND TERMINATING AT THE OTHER END AT AN INTERRUPTIVE STEP BETWEEN SAID ONE FACE AND THE OTHER FACE OF SAID CASING, SAID SLOTS OF SAID CASING BEING ARRANGED TO SLIDABLY COOPERATE WITH THE SIDE EDGES OF SAID PANEL APERTURE TO PROVIDE SECOND AND THIRD POINTS OF ENGAGEMENT OF SAID LAMPHOLDER WITH SAID PANEL, WITH SAID INTERRUPTIVE STEPS LIMITING THE INSERTION OF SAID LAMPHOLDER INTO SAID APERTURE, WHEREBY SAID LAMPHOLDER SLIDABLY COOPERATES WITH AND IS EFFECTIVELY SECURED TO THE APERTURE OF SAID PANEL AT THREE POINTS OF ENGAGEMENT.