Sign assembly

Details Sign assembly Sign assembly

1987-05-18

1989-04-04

Croyle, Carlton R.

Card, picture, or sign exhibiting

Illuminated sign

Lamp box

40 5, 40568, 40649, G09F 1304

Patent

active

048173169

ABSTRACT:
A changeable copy sign assembly comprising a plurality of wafers each bearing a single indicium on a relatively opaque background. The wafers and a backing strip are removeably retained to a face plate of the assembly at an elongated, window-like opening, and the backing strip comprises opaque makings for preventing the leakage of light between adjacent wafers.

REFERENCES:
patent: 1521177 (1924-12-01), Friis et al.
patent: 2587368 (1952-02-01), Murphy
patent: 3742633 (1973-07-01), Palm
patent: 4174580 (1979-11-01), Sanders et al.
patent: 4177588 (1979-12-01), Gebhardt et al.
patent: 4553345 (1985-11-01), Bercier et al.
patent: 4693026 (1987-09-01), Callahans et al.

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