Display set for a transparent sheet intended for overhead...

Details Display set for a transparent sheet intended for overhead... Display set for a transparent sheet intended for overhead...

G - Physics

03

B

G03B 21/132 (2006.01)

Patent

CA 2123511

2123511 9312454 PCTABS00023 A rectangular, transparent envelope (10) sized to receive a transparent sheet having indicia for projection, the envelope being attached to a backing (8) having perforations (9) allowing the backing to be attached to a ring binder (3). The envelope (10) may be folded at its attachment to the backing for storage in the binder (3) or unfolded to be placed on a projector (1) located next to the binder.

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