Color filter for wind-up system color changer

Details Color filter for wind-up system color changer Color filter for wind-up system color changer

1987-06-17

1989-01-31

Little, Willis

Flexible bags

Plural

383 38, 383123, 383109, 350317, 350318, 350130, B65D 3000

Patent

active

048012149

ABSTRACT:
There is disclosed a color filter for wind-up system color changer which comprises two sheets of laminated transparent films in continuous length, having a plural number of units each comprising a sheet of a transparent film folded in two provided in series sealed between the films in continuous length with its line of flection being disposed along the longer direction of the films in continuous length, and the edges of the units on the opposite side to the line of flection being under the state opened.

REFERENCES:
patent: 2647680 (1953-08-01), Vogt
patent: 3186473 (1965-06-01), Myers et al.
patent: 4598421 (1986-07-01), Jostler

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