A self-standing placard adapted to bear a message on its front side. The placard comprises a curvable member fastened at one end to the back side of the placard at an acute angle, and a stiff, spacing member connected with reinforcement to the other end of the curvable member.
申请公布号
US5056250(A)
申请公布日期
1991.10.15
申请号
US19900472704
申请日期
1990.01.31
申请人
WEISSLEDER, RICHARD P.;CHIPKIN, LAWRENCE I.;LAMENDOLA, FRANK A.
发明人
WEISSLEDER, RICHARD P.;CHIPKIN, LAWRENCE I.;LAMENDOLA, FRANK A.