Telegraphy – Systems – Simplex-reversing periodic
Patent
1974-12-23
1976-03-16
Griffin, Robert L.
Telegraphy
Systems
Simplex-reversing periodic
178 791, H04N 574, H04N 5645
Patent
active
039447340
ABSTRACT:
A video projecting system having a cabinet with one end being opened, a screen in the cabinet and its upper portion, a movable side board attached to the cabinet at the lower side of its opening, and a projector and a mirror both attached to the movable side board on its inner surface, in which when the movable side board is drawn out a picture from the projector is reflected on the mirror and then projected onto the screen.
REFERENCES:
patent: 2509508 (1950-05-01), Kalff
patent: 3036154 (1962-05-01), Harman
Coles Edward L.
Eslinger Lewis H.
Griffin Robert L.
Sinderbrand Alvin
Sony Corporation
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