Advertising sign construction

Claim 1

IN AN ADVERTISING SIGN CONSTRUCTION FOR REMOVABLY ATTACHING A PLACARD SIGN HAVING DISPOSED IN THE FACE THEREOF A PLURALITY OF MOUNTING APERTURES, A DISPLAY SIGN-HOLDING ASSEMBLY WHICH COMPRISES A SIGN SUPPORT MEANS HAVING A RECTANGULAR FRAME FABRICATED FROM AT LEAST ONE THIN, NARROW BAR HAVING A PLANAR FACE UPON WHICH THE SIGN RESTS, A PLURALITY OF TOGGLE CLAMPS MOUNTED ON SAID PLANAR FACE IN SPACED RELATION EACH TO THE OTHER IN A PATTERN CONFORMING WITH THE PATTERN OF SAID MOUNTING APERTURE, SAID TOGGLE CLAMPS COMPRISING A PAIR OF SPACED RESILIENT ARMS ATTACHED TO SAID PLANAR FACE, A TOGGLE ARM HAVING A PAIR OF TRUNNIONS LATERALLY DEPENDING FROM SAID ARM ENGAGING SAID RESILIENT ARMS, SAID TRUNNIONS HAVING A WIDTH TO THICKNESS RATIO OF GREATER THAN ONE WHEREBY SAID ARM CAN BE HELD IN SIGN-INSTALLING POSITION NORMAL TO SAID FACE, AND BE PIVOTED INTO A BIASED CLAMPING POSITION SUBSTANTIALLY PARALLEL TO AND IN COOPERATION WITH SAID PLANAR AREA.