Stereoscopic viewer

Details Stereoscopic viewer Stereoscopic viewer

1977-06-27

1979-05-01

Henry, Jon W.

G02B 2704

Patent

active

041520483

ABSTRACT:
A viewer for a stereoscopic film slide is assembled from a cardboard blank and includes front and rear portions defining therebetween a slot to receive the slide. The slot has open ends and an open top and the rear portion of the viewer is displaceable rearwardly to open the slot to a generally V-shaped configuration for insertion of the film slide into and removal thereof from the slot. The rear portion of the viewer is maintained in its normal position by an elastic tension member which extends diagonally of said portion.

REFERENCES:
patent: 2934999 (1960-05-01), Baumel
patent: 3562939 (1971-02-01), Jacobs et al.
patent: 3734596 (1973-05-01), Merlich
patent: 3756699 (1973-09-01), Martin

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